Home / 87,705.68-131,528.71-28,526.66

Finding the Fourth Proportional to 87,705.68, 131,528.71 and 28,526.66

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Solution

The fourth proportional to 87,705.68, 131,528.71 and 28,526.66 is: 42,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.68 : 131,528.71 = 28,526.66 : x
  2. Step 2: Convert to fraction form
    87,705.68/131,528.71 = 28,526.66/x
  3. Step 3: Cross multiply
    87,705.68x = 131,528.71 × 28,526.66
  4. Step 4: Simplify right side
    87,705.68x = 3,752,074,790.41
  5. Step 5: Solve for x
    x = 3,752,074,790.41/87,705.68
  6. Step 6: Final answer
    x = 42,780.29

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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.