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Finding the Fourth Proportional to 81,566.92, 112,497.42 and 67,395.16

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Solution

The fourth proportional to 81,566.92, 112,497.42 and 67,395.16 is: 92,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,566.92 : 112,497.42 = 67,395.16 : x
  2. Step 2: Convert to fraction form
    81,566.92/112,497.42 = 67,395.16/x
  3. Step 3: Cross multiply
    81,566.92x = 112,497.42 × 67,395.16
  4. Step 4: Simplify right side
    81,566.92x = 7,581,781,620.49
  5. Step 5: Solve for x
    x = 7,581,781,620.49/81,566.92
  6. Step 6: Final answer
    x = 92,951.67

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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.