Home / 87,077.60-130,616.40-40,421.60

Finding the Fourth Proportional to 87,077.60, 130,616.40 and 40,421.60

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Solution

The fourth proportional to 87,077.60, 130,616.40 and 40,421.60 is: 60,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,077.60 : 130,616.40 = 40,421.60 : x
  2. Step 2: Convert to fraction form
    87,077.60/130,616.40 = 40,421.60/x
  3. Step 3: Cross multiply
    87,077.60x = 130,616.40 × 40,421.60
  4. Step 4: Simplify right side
    87,077.60x = 5,279,723,874.24
  5. Step 5: Solve for x
    x = 5,279,723,874.24/87,077.60
  6. Step 6: Final answer
    x = 60,632.40

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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.