Home / 83,715.17-115,557.26-55,429.97

Finding the Fourth Proportional to 83,715.17, 115,557.26 and 55,429.97

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Solution

The fourth proportional to 83,715.17, 115,557.26 and 55,429.97 is: 76,513.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,715.17 : 115,557.26 = 55,429.97 : x
  2. Step 2: Convert to fraction form
    83,715.17/115,557.26 = 55,429.97/x
  3. Step 3: Cross multiply
    83,715.17x = 115,557.26 × 55,429.97
  4. Step 4: Simplify right side
    83,715.17x = 6,405,334,600.15
  5. Step 5: Solve for x
    x = 6,405,334,600.15/83,715.17
  6. Step 6: Final answer
    x = 76,513.43

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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.