Home / 87,043.50-120,120.18-49,320.30

Finding the Fourth Proportional to 87,043.50, 120,120.18 and 49,320.30

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Solution

The fourth proportional to 87,043.50, 120,120.18 and 49,320.30 is: 68,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,043.50 : 120,120.18 = 49,320.30 : x
  2. Step 2: Convert to fraction form
    87,043.50/120,120.18 = 49,320.30/x
  3. Step 3: Cross multiply
    87,043.50x = 120,120.18 × 49,320.30
  4. Step 4: Simplify right side
    87,043.50x = 5,924,363,313.65
  5. Step 5: Solve for x
    x = 5,924,363,313.65/87,043.50
  6. Step 6: Final answer
    x = 68,062.10

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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.