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Finding the Fourth Proportional to 74,843.60, 112,265.40 and 67,931.60

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Solution

The fourth proportional to 74,843.60, 112,265.40 and 67,931.60 is: 101,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,843.60 : 112,265.40 = 67,931.60 : x
  2. Step 2: Convert to fraction form
    74,843.60/112,265.40 = 67,931.60/x
  3. Step 3: Cross multiply
    74,843.60x = 112,265.40 × 67,931.60
  4. Step 4: Simplify right side
    74,843.60x = 7,626,368,246.64
  5. Step 5: Solve for x
    x = 7,626,368,246.64/74,843.60
  6. Step 6: Final answer
    x = 101,897.40

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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.