Home / 87,416.12-120,631.20-49,176.30

Finding the Fourth Proportional to 87,416.12, 120,631.20 and 49,176.30

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Solution

The fourth proportional to 87,416.12, 120,631.20 and 49,176.30 is: 67,861.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,416.12 : 120,631.20 = 49,176.30 : x
  2. Step 2: Convert to fraction form
    87,416.12/120,631.20 = 49,176.30/x
  3. Step 3: Cross multiply
    87,416.12x = 120,631.20 × 49,176.30
  4. Step 4: Simplify right side
    87,416.12x = 5,932,196,080.56
  5. Step 5: Solve for x
    x = 5,932,196,080.56/87,416.12
  6. Step 6: Final answer
    x = 67,861.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.