Home / 87,707.68-131,531.71-28,528.66

Finding the Fourth Proportional to 87,707.68, 131,531.71 and 28,528.66

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Solution

The fourth proportional to 87,707.68, 131,531.71 and 28,528.66 is: 42,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,707.68 : 131,531.71 = 28,528.66 : x
  2. Step 2: Convert to fraction form
    87,707.68/131,531.71 = 28,528.66/x
  3. Step 3: Cross multiply
    87,707.68x = 131,531.71 × 28,528.66
  4. Step 4: Simplify right side
    87,707.68x = 3,752,423,433.81
  5. Step 5: Solve for x
    x = 3,752,423,433.81/87,707.68
  6. Step 6: Final answer
    x = 42,783.29

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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.