Home / 83,940.18-115,825.50-48,131.70

Finding the Fourth Proportional to 83,940.18, 115,825.50 and 48,131.70

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Solution

The fourth proportional to 83,940.18, 115,825.50 and 48,131.70 is: 66,414.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,940.18 : 115,825.50 = 48,131.70 : x
  2. Step 2: Convert to fraction form
    83,940.18/115,825.50 = 48,131.70/x
  3. Step 3: Cross multiply
    83,940.18x = 115,825.50 × 48,131.70
  4. Step 4: Simplify right side
    83,940.18x = 5,574,878,218.35
  5. Step 5: Solve for x
    x = 5,574,878,218.35/83,940.18
  6. Step 6: Final answer
    x = 66,414.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.