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Finding the Fourth Proportional to 74,691.77, 103,073.32 and 40,700.50

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Solution

The fourth proportional to 74,691.77, 103,073.32 and 40,700.50 is: 56,165.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,691.77 : 103,073.32 = 40,700.50 : x
  2. Step 2: Convert to fraction form
    74,691.77/103,073.32 = 40,700.50/x
  3. Step 3: Cross multiply
    74,691.77x = 103,073.32 × 40,700.50
  4. Step 4: Simplify right side
    74,691.77x = 4,195,135,453.85
  5. Step 5: Solve for x
    x = 4,195,135,453.85/74,691.77
  6. Step 6: Final answer
    x = 56,165.97

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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.