Home / 87,915.45-131,871.35-21,355.93

Finding the Fourth Proportional to 87,915.45, 131,871.35 and 21,355.93

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Solution

The fourth proportional to 87,915.45, 131,871.35 and 21,355.93 is: 32,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.45 : 131,871.35 = 21,355.93 : x
  2. Step 2: Convert to fraction form
    87,915.45/131,871.35 = 21,355.93/x
  3. Step 3: Cross multiply
    87,915.45x = 131,871.35 × 21,355.93
  4. Step 4: Simplify right side
    87,915.45x = 2,816,235,319.61
  5. Step 5: Solve for x
    x = 2,816,235,319.61/87,915.45
  6. Step 6: Final answer
    x = 32,033.45

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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.