Home / 87,007.55-130,511.33-42,720.80

Finding the Fourth Proportional to 87,007.55, 130,511.33 and 42,720.80

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Solution

The fourth proportional to 87,007.55, 130,511.33 and 42,720.80 is: 64,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,007.55 : 130,511.33 = 42,720.80 : x
  2. Step 2: Convert to fraction form
    87,007.55/130,511.33 = 42,720.80/x
  3. Step 3: Cross multiply
    87,007.55x = 130,511.33 × 42,720.80
  4. Step 4: Simplify right side
    87,007.55x = 5,575,548,213.06
  5. Step 5: Solve for x
    x = 5,575,548,213.06/87,007.55
  6. Step 6: Final answer
    x = 64,081.20

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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.