Home / 87,640.10-131,460.15-40,984.10

Finding the Fourth Proportional to 87,640.10, 131,460.15 and 40,984.10

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Solution

The fourth proportional to 87,640.10, 131,460.15 and 40,984.10 is: 61,476.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,640.10 : 131,460.15 = 40,984.10 : x
  2. Step 2: Convert to fraction form
    87,640.10/131,460.15 = 40,984.10/x
  3. Step 3: Cross multiply
    87,640.10x = 131,460.15 × 40,984.10
  4. Step 4: Simplify right side
    87,640.10x = 5,387,775,933.62
  5. Step 5: Solve for x
    x = 5,387,775,933.62/87,640.10
  6. Step 6: Final answer
    x = 61,476.15

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1.5x scale

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.