Home / 83,285.16-124,976.60-30,731.28

Finding the Fourth Proportional to 83,285.16, 124,976.60 and 30,731.28

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Solution

The fourth proportional to 83,285.16, 124,976.60 and 30,731.28 is: 46,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,285.16 : 124,976.60 = 30,731.28 : x
  2. Step 2: Convert to fraction form
    83,285.16/124,976.60 = 30,731.28/x
  3. Step 3: Cross multiply
    83,285.16x = 124,976.60 × 30,731.28
  4. Step 4: Simplify right side
    83,285.16x = 3,840,690,888.05
  5. Step 5: Solve for x
    x = 3,840,690,888.05/83,285.16
  6. Step 6: Final answer
    x = 46,114.95

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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.