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Finding the Fourth Proportional to 91,737.92, 126,640.32 and 66,776.96

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Solution

The fourth proportional to 91,737.92, 126,640.32 and 66,776.96 is: 92,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,737.92 : 126,640.32 = 66,776.96 : x
  2. Step 2: Convert to fraction form
    91,737.92/126,640.32 = 66,776.96/x
  3. Step 3: Cross multiply
    91,737.92x = 126,640.32 × 66,776.96
  4. Step 4: Simplify right side
    91,737.92x = 8,456,655,583.03
  5. Step 5: Solve for x
    x = 8,456,655,583.03/91,737.92
  6. Step 6: Final answer
    x = 92,182.77

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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.