Home / 83,740.31-115,516.13-51,463.28

Finding the Fourth Proportional to 83,740.31, 115,516.13 and 51,463.28

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Solution

The fourth proportional to 83,740.31, 115,516.13 and 51,463.28 is: 70,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,740.31 : 115,516.13 = 51,463.28 : x
  2. Step 2: Convert to fraction form
    83,740.31/115,516.13 = 51,463.28/x
  3. Step 3: Cross multiply
    83,740.31x = 115,516.13 × 51,463.28
  4. Step 4: Simplify right side
    83,740.31x = 5,944,838,974.18
  5. Step 5: Solve for x
    x = 5,944,838,974.18/83,740.31
  6. Step 6: Final answer
    x = 70,991.36

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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.