Home / 87,642.80-131,510.10-40,272.20

Finding the Fourth Proportional to 87,642.80, 131,510.10 and 40,272.20

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Solution

The fourth proportional to 87,642.80, 131,510.10 and 40,272.20 is: 60,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,642.80 : 131,510.10 = 40,272.20 : x
  2. Step 2: Convert to fraction form
    87,642.80/131,510.10 = 40,272.20/x
  3. Step 3: Cross multiply
    87,642.80x = 131,510.10 × 40,272.20
  4. Step 4: Simplify right side
    87,642.80x = 5,296,201,049.22
  5. Step 5: Solve for x
    x = 5,296,201,049.22/87,642.80
  6. Step 6: Final answer
    x = 60,429.39

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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.