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Finding the Fourth Proportional to 88,689.87, 122,437.17 and 68,501.43

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Solution

The fourth proportional to 88,689.87, 122,437.17 and 68,501.43 is: 94,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,689.87 : 122,437.17 = 68,501.43 : x
  2. Step 2: Convert to fraction form
    88,689.87/122,437.17 = 68,501.43/x
  3. Step 3: Cross multiply
    88,689.87x = 122,437.17 × 68,501.43
  4. Step 4: Simplify right side
    88,689.87x = 8,387,121,230.15
  5. Step 5: Solve for x
    x = 8,387,121,230.15/88,689.87
  6. Step 6: Final answer
    x = 94,566.85

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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.