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Finding the Fourth Proportional to 79,266.60, 118,899.90 and 39,900.60

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Solution

The fourth proportional to 79,266.60, 118,899.90 and 39,900.60 is: 59,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,266.60 : 118,899.90 = 39,900.60 : x
  2. Step 2: Convert to fraction form
    79,266.60/118,899.90 = 39,900.60/x
  3. Step 3: Cross multiply
    79,266.60x = 118,899.90 × 39,900.60
  4. Step 4: Simplify right side
    79,266.60x = 4,744,177,349.94
  5. Step 5: Solve for x
    x = 4,744,177,349.94/79,266.60
  6. Step 6: Final answer
    x = 59,850.90

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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.