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Finding the Fourth Proportional to 83,493.28, 115,221.13 and 49,959.28

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Solution

The fourth proportional to 83,493.28, 115,221.13 and 49,959.28 is: 68,944.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,493.28 : 115,221.13 = 49,959.28 : x
  2. Step 2: Convert to fraction form
    83,493.28/115,221.13 = 49,959.28/x
  3. Step 3: Cross multiply
    83,493.28x = 115,221.13 × 49,959.28
  4. Step 4: Simplify right side
    83,493.28x = 5,756,364,995.74
  5. Step 5: Solve for x
    x = 5,756,364,995.74/83,493.28
  6. Step 6: Final answer
    x = 68,944.05

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1.5x scale

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.