Home / 87,811.30-131,522.55-72,259.30

Finding the Fourth Proportional to 87,811.30, 131,522.55 and 72,259.30

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Solution

The fourth proportional to 87,811.30, 131,522.55 and 72,259.30 is: 108,228.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,811.30 : 131,522.55 = 72,259.30 : x
  2. Step 2: Convert to fraction form
    87,811.30/131,522.55 = 72,259.30/x
  3. Step 3: Cross multiply
    87,811.30x = 131,522.55 × 72,259.30
  4. Step 4: Simplify right side
    87,811.30x = 9,503,727,397.22
  5. Step 5: Solve for x
    x = 9,503,727,397.22/87,811.30
  6. Step 6: Final answer
    x = 108,228.98

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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.