Home / 80,937.27-121,407.08-31,019.90

Finding the Fourth Proportional to 80,937.27, 121,407.08 and 31,019.90

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Solution

The fourth proportional to 80,937.27, 121,407.08 and 31,019.90 is: 46,530.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.27 : 121,407.08 = 31,019.90 : x
  2. Step 2: Convert to fraction form
    80,937.27/121,407.08 = 31,019.90/x
  3. Step 3: Cross multiply
    80,937.27x = 121,407.08 × 31,019.90
  4. Step 4: Simplify right side
    80,937.27x = 3,766,034,718.76
  5. Step 5: Solve for x
    x = 3,766,034,718.76/80,937.27
  6. Step 6: Final answer
    x = 46,530.29

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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.