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Finding the Fourth Proportional to 74,357.55, 102,613.50 and 40,366.02

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Solution

The fourth proportional to 74,357.55, 102,613.50 and 40,366.02 is: 55,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,357.55 : 102,613.50 = 40,366.02 : x
  2. Step 2: Convert to fraction form
    74,357.55/102,613.50 = 40,366.02/x
  3. Step 3: Cross multiply
    74,357.55x = 102,613.50 × 40,366.02
  4. Step 4: Simplify right side
    74,357.55x = 4,142,098,593.27
  5. Step 5: Solve for x
    x = 4,142,098,593.27/74,357.55
  6. Step 6: Final answer
    x = 55,705.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.