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Finding the Fourth Proportional to 91,489.80, 137,234.70 and 32,392.20

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Solution

The fourth proportional to 91,489.80, 137,234.70 and 32,392.20 is: 48,588.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,489.80 : 137,234.70 = 32,392.20 : x
  2. Step 2: Convert to fraction form
    91,489.80/137,234.70 = 32,392.20/x
  3. Step 3: Cross multiply
    91,489.80x = 137,234.70 × 32,392.20
  4. Step 4: Simplify right side
    91,489.80x = 4,445,333,849.34
  5. Step 5: Solve for x
    x = 4,445,333,849.34/91,489.80
  6. Step 6: Final answer
    x = 48,588.30

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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.