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Finding the Fourth Proportional to 81,562.92, 112,491.90 and 67,391.16

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Solution

The fourth proportional to 81,562.92, 112,491.90 and 67,391.16 is: 92,946.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,562.92 : 112,491.90 = 67,391.16 : x
  2. Step 2: Convert to fraction form
    81,562.92/112,491.90 = 67,391.16/x
  3. Step 3: Cross multiply
    81,562.92x = 112,491.90 × 67,391.16
  4. Step 4: Simplify right side
    81,562.92x = 7,580,959,631.60
  5. Step 5: Solve for x
    x = 7,580,959,631.60/81,562.92
  6. Step 6: Final answer
    x = 92,946.15

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1.5x scale

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.