Home / 87,020.28-130,296.18-45,379.32

Finding the Fourth Proportional to 87,020.28, 130,296.18 and 45,379.32

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Solution

The fourth proportional to 87,020.28, 130,296.18 and 45,379.32 is: 67,946.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,020.28 : 130,296.18 = 45,379.32 : x
  2. Step 2: Convert to fraction form
    87,020.28/130,296.18 = 45,379.32/x
  3. Step 3: Cross multiply
    87,020.28x = 130,296.18 × 45,379.32
  4. Step 4: Simplify right side
    87,020.28x = 5,912,752,047.00
  5. Step 5: Solve for x
    x = 5,912,752,047.00/87,020.28
  6. Step 6: Final answer
    x = 67,946.83

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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.