Home / 83,988.28-115,859.70-49,972.60

Finding the Fourth Proportional to 83,988.28, 115,859.70 and 49,972.60

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Solution

The fourth proportional to 83,988.28, 115,859.70 and 49,972.60 is: 68,935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,988.28 : 115,859.70 = 49,972.60 : x
  2. Step 2: Convert to fraction form
    83,988.28/115,859.70 = 49,972.60/x
  3. Step 3: Cross multiply
    83,988.28x = 115,859.70 × 49,972.60
  4. Step 4: Simplify right side
    83,988.28x = 5,789,810,444.22
  5. Step 5: Solve for x
    x = 5,789,810,444.22/83,988.28
  6. Step 6: Final answer
    x = 68,935.93

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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.