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Finding the Fourth Proportional to 78,897,807.60, 118,346,711.40 and 59,765,931.60

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Solution

The fourth proportional to 78,897,807.60, 118,346,711.40 and 59,765,931.60 is: 89,648,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,897,807.60 : 118,346,711.40 = 59,765,931.60 : x
  2. Step 2: Convert to fraction form
    78,897,807.60/118,346,711.40 = 59,765,931.60/x
  3. Step 3: Cross multiply
    78,897,807.60x = 118,346,711.40 × 59,765,931.60
  4. Step 4: Simplify right side
    78,897,807.60x = 7,073,101,458,617,341
  5. Step 5: Solve for x
    x = 7,073,101,458,617,341/78,897,807.60
  6. Step 6: Final answer
    x = 89,648,897.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.