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Finding the Fourth Proportional to 87,324.60, 130,986.90 and 40,668.60

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Solution

The fourth proportional to 87,324.60, 130,986.90 and 40,668.60 is: 61,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,324.60 : 130,986.90 = 40,668.60 : x
  2. Step 2: Convert to fraction form
    87,324.60/130,986.90 = 40,668.60/x
  3. Step 3: Cross multiply
    87,324.60x = 130,986.90 × 40,668.60
  4. Step 4: Simplify right side
    87,324.60x = 5,327,053,841.34
  5. Step 5: Solve for x
    x = 5,327,053,841.34/87,324.60
  6. Step 6: Final answer
    x = 61,002.90

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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.