Home / 80,209.48-120,245.10-38,685.64

Finding the Fourth Proportional to 80,209.48, 120,245.10 and 38,685.64

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Solution

The fourth proportional to 80,209.48, 120,245.10 and 38,685.64 is: 57,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,209.48 : 120,245.10 = 38,685.64 : x
  2. Step 2: Convert to fraction form
    80,209.48/120,245.10 = 38,685.64/x
  3. Step 3: Cross multiply
    80,209.48x = 120,245.10 × 38,685.64
  4. Step 4: Simplify right side
    80,209.48x = 4,651,758,650.36
  5. Step 5: Solve for x
    x = 4,651,758,650.36/80,209.48
  6. Step 6: Final answer
    x = 57,995.12

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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.