Home / 80,737.31-121,114.20-30,859.38

Finding the Fourth Proportional to 80,737.31, 121,114.20 and 30,859.38

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Solution

The fourth proportional to 80,737.31, 121,114.20 and 30,859.38 is: 46,292.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,737.31 : 121,114.20 = 30,859.38 : x
  2. Step 2: Convert to fraction form
    80,737.31/121,114.20 = 30,859.38/x
  3. Step 3: Cross multiply
    80,737.31x = 121,114.20 × 30,859.38
  4. Step 4: Simplify right side
    80,737.31x = 3,737,509,121.20
  5. Step 5: Solve for x
    x = 3,737,509,121.20/80,737.31
  6. Step 6: Final answer
    x = 46,292.22

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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.