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Finding the Fourth Proportional to 91,000.66, 125,644.92 and 63,834.46

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Solution

The fourth proportional to 91,000.66, 125,644.92 and 63,834.46 is: 88,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,000.66 : 125,644.92 = 63,834.46 : x
  2. Step 2: Convert to fraction form
    91,000.66/125,644.92 = 63,834.46/x
  3. Step 3: Cross multiply
    91,000.66x = 125,644.92 × 63,834.46
  4. Step 4: Simplify right side
    91,000.66x = 8,020,475,619.94
  5. Step 5: Solve for x
    x = 8,020,475,619.94/91,000.66
  6. Step 6: Final answer
    x = 88,136.46

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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.