Home / 87,720.39-131,558.65-34,423.20

Finding the Fourth Proportional to 87,720.39, 131,558.65 and 34,423.20

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Solution

The fourth proportional to 87,720.39, 131,558.65 and 34,423.20 is: 51,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.39 : 131,558.65 = 34,423.20 : x
  2. Step 2: Convert to fraction form
    87,720.39/131,558.65 = 34,423.20/x
  3. Step 3: Cross multiply
    87,720.39x = 131,558.65 × 34,423.20
  4. Step 4: Simplify right side
    87,720.39x = 4,528,669,720.68
  5. Step 5: Solve for x
    x = 4,528,669,720.68/87,720.39
  6. Step 6: Final answer
    x = 51,626.19

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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.