Home / 87,521.40-131,063.40-57,778.20

Finding the Fourth Proportional to 87,521.40, 131,063.40 and 57,778.20

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Solution

The fourth proportional to 87,521.40, 131,063.40 and 57,778.20 is: 86,522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,521.40 : 131,063.40 = 57,778.20 : x
  2. Step 2: Convert to fraction form
    87,521.40/131,063.40 = 57,778.20/x
  3. Step 3: Cross multiply
    87,521.40x = 131,063.40 × 57,778.20
  4. Step 4: Simplify right side
    87,521.40x = 7,572,607,337.88
  5. Step 5: Solve for x
    x = 7,572,607,337.88/87,521.40
  6. Step 6: Final answer
    x = 86,522.92

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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.