Home / 87,079.16-130,503.54-31,621.88

Finding the Fourth Proportional to 87,079.16, 130,503.54 and 31,621.88

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Solution

The fourth proportional to 87,079.16, 130,503.54 and 31,621.88 is: 47,390.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,079.16 : 130,503.54 = 31,621.88 : x
  2. Step 2: Convert to fraction form
    87,079.16/130,503.54 = 31,621.88/x
  3. Step 3: Cross multiply
    87,079.16x = 130,503.54 × 31,621.88
  4. Step 4: Simplify right side
    87,079.16x = 4,126,767,281.46
  5. Step 5: Solve for x
    x = 4,126,767,281.46/87,079.16
  6. Step 6: Final answer
    x = 47,390.99

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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.