Home / 87,008.20-130,512.30-47,642.20

Finding the Fourth Proportional to 87,008.20, 130,512.30 and 47,642.20

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Solution

The fourth proportional to 87,008.20, 130,512.30 and 47,642.20 is: 71,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008.20 : 130,512.30 = 47,642.20 : x
  2. Step 2: Convert to fraction form
    87,008.20/130,512.30 = 47,642.20/x
  3. Step 3: Cross multiply
    87,008.20x = 130,512.30 × 47,642.20
  4. Step 4: Simplify right side
    87,008.20x = 6,217,893,099.06
  5. Step 5: Solve for x
    x = 6,217,893,099.06/87,008.20
  6. Step 6: Final answer
    x = 71,463.30

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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.