Home / 80,145.28-120,217.92-30,862.72

Finding the Fourth Proportional to 80,145.28, 120,217.92 and 30,862.72

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Solution

The fourth proportional to 80,145.28, 120,217.92 and 30,862.72 is: 46,294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,145.28 : 120,217.92 = 30,862.72 : x
  2. Step 2: Convert to fraction form
    80,145.28/120,217.92 = 30,862.72/x
  3. Step 3: Cross multiply
    80,145.28x = 120,217.92 × 30,862.72
  4. Step 4: Simplify right side
    80,145.28x = 3,710,252,003.94
  5. Step 5: Solve for x
    x = 3,710,252,003.94/80,145.28
  6. Step 6: Final answer
    x = 46,294.08

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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.