Home / 87,720.53-131,530.43-34,350.02

Finding the Fourth Proportional to 87,720.53, 131,530.43 and 34,350.02

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Solution

The fourth proportional to 87,720.53, 131,530.43 and 34,350.02 is: 51,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.53 : 131,530.43 = 34,350.02 : x
  2. Step 2: Convert to fraction form
    87,720.53/131,530.43 = 34,350.02/x
  3. Step 3: Cross multiply
    87,720.53x = 131,530.43 × 34,350.02
  4. Step 4: Simplify right side
    87,720.53x = 4,518,072,901.11
  5. Step 5: Solve for x
    x = 4,518,072,901.11/87,720.53
  6. Step 6: Final answer
    x = 51,505.31

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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.