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Finding the Fourth Proportional to 91,475.40, 137,213.10 and 63,481.80

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Solution

The fourth proportional to 91,475.40, 137,213.10 and 63,481.80 is: 95,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,475.40 : 137,213.10 = 63,481.80 : x
  2. Step 2: Convert to fraction form
    91,475.40/137,213.10 = 63,481.80/x
  3. Step 3: Cross multiply
    91,475.40x = 137,213.10 × 63,481.80
  4. Step 4: Simplify right side
    91,475.40x = 8,710,534,571.58
  5. Step 5: Solve for x
    x = 8,710,534,571.58/91,475.40
  6. Step 6: Final answer
    x = 95,222.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.