Home / 87,534.81-131,325.53-31,380.53

Finding the Fourth Proportional to 87,534.81, 131,325.53 and 31,380.53

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Solution

The fourth proportional to 87,534.81, 131,325.53 and 31,380.53 is: 47,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,534.81 : 131,325.53 = 31,380.53 : x
  2. Step 2: Convert to fraction form
    87,534.81/131,325.53 = 31,380.53/x
  3. Step 3: Cross multiply
    87,534.81x = 131,325.53 × 31,380.53
  4. Step 4: Simplify right side
    87,534.81x = 4,121,063,920.40
  5. Step 5: Solve for x
    x = 4,121,063,920.40/87,534.81
  6. Step 6: Final answer
    x = 47,079.14

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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.