Home / 83,769.90-125,640.45-31,152.30

Finding the Fourth Proportional to 83,769.90, 125,640.45 and 31,152.30

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Solution

The fourth proportional to 83,769.90, 125,640.45 and 31,152.30 is: 46,723.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,769.90 : 125,640.45 = 31,152.30 : x
  2. Step 2: Convert to fraction form
    83,769.90/125,640.45 = 31,152.30/x
  3. Step 3: Cross multiply
    83,769.90x = 125,640.45 × 31,152.30
  4. Step 4: Simplify right side
    83,769.90x = 3,913,988,990.54
  5. Step 5: Solve for x
    x = 3,913,988,990.54/83,769.90
  6. Step 6: Final answer
    x = 46,723.09

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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.