Home / 45,129.96-67,687.25-13,531.46

Finding the Fourth Proportional to 45,129.96, 67,687.25 and 13,531.46

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Solution

The fourth proportional to 45,129.96, 67,687.25 and 13,531.46 is: 20,294.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.96 : 67,687.25 = 13,531.46 : x
  2. Step 2: Convert to fraction form
    45,129.96/67,687.25 = 13,531.46/x
  3. Step 3: Cross multiply
    45,129.96x = 67,687.25 × 13,531.46
  4. Step 4: Simplify right side
    45,129.96x = 915,906,909.79
  5. Step 5: Solve for x
    x = 915,906,909.79/45,129.96
  6. Step 6: Final answer
    x = 20,294.88

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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.