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Finding the Fourth Proportional to 74,447.84, 102,737.96 and 40,456.20

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Solution

The fourth proportional to 74,447.84, 102,737.96 and 40,456.20 is: 55,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,447.84 : 102,737.96 = 40,456.20 : x
  2. Step 2: Convert to fraction form
    74,447.84/102,737.96 = 40,456.20/x
  3. Step 3: Cross multiply
    74,447.84x = 102,737.96 × 40,456.20
  4. Step 4: Simplify right side
    74,447.84x = 4,156,387,457.35
  5. Step 5: Solve for x
    x = 4,156,387,457.35/74,447.84
  6. Step 6: Final answer
    x = 55,829.52

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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.