Home / 87,473.96-120,585-61,900.88

Finding the Fourth Proportional to 87,473.96, 120,585 and 61,900.88

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Solution

The fourth proportional to 87,473.96, 120,585 and 61,900.88 is: 85,331.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,473.96 : 120,585 = 61,900.88 : x
  2. Step 2: Convert to fraction form
    87,473.96/120,585 = 61,900.88/x
  3. Step 3: Cross multiply
    87,473.96x = 120,585 × 61,900.88
  4. Step 4: Simplify right side
    87,473.96x = 7,464,317,614.80
  5. Step 5: Solve for x
    x = 7,464,317,614.80/87,473.96
  6. Step 6: Final answer
    x = 85,331.88

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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.