Home / 87,158.48-130,694.51-30,990.15

Finding the Fourth Proportional to 87,158.48, 130,694.51 and 30,990.15

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Solution

The fourth proportional to 87,158.48, 130,694.51 and 30,990.15 is: 46,469.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,158.48 : 130,694.51 = 30,990.15 : x
  2. Step 2: Convert to fraction form
    87,158.48/130,694.51 = 30,990.15/x
  3. Step 3: Cross multiply
    87,158.48x = 130,694.51 × 30,990.15
  4. Step 4: Simplify right side
    87,158.48x = 4,050,242,114.55
  5. Step 5: Solve for x
    x = 4,050,242,114.55/87,158.48
  6. Step 6: Final answer
    x = 46,469.86

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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.