Home / 60,129.28-90,191.22-20,686.60

Finding the Fourth Proportional to 60,129.28, 90,191.22 and 20,686.60

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Solution

The fourth proportional to 60,129.28, 90,191.22 and 20,686.60 is: 31,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,129.28 : 90,191.22 = 20,686.60 : x
  2. Step 2: Convert to fraction form
    60,129.28/90,191.22 = 20,686.60/x
  3. Step 3: Cross multiply
    60,129.28x = 90,191.22 × 20,686.60
  4. Step 4: Simplify right side
    60,129.28x = 1,865,749,691.65
  5. Step 5: Solve for x
    x = 1,865,749,691.65/60,129.28
  6. Step 6: Final answer
    x = 31,028.97

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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.