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Finding the Fourth Proportional to 72,253.91, 108,363.84 and 40,677.68

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Solution

The fourth proportional to 72,253.91, 108,363.84 and 40,677.68 is: 61,006.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,253.91 : 108,363.84 = 40,677.68 : x
  2. Step 2: Convert to fraction form
    72,253.91/108,363.84 = 40,677.68/x
  3. Step 3: Cross multiply
    72,253.91x = 108,363.84 × 40,677.68
  4. Step 4: Simplify right side
    72,253.91x = 4,407,989,065.27
  5. Step 5: Solve for x
    x = 4,407,989,065.27/72,253.91
  6. Step 6: Final answer
    x = 61,006.93

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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.