Home / 81,133.28-111,953.88-45,330.06

Finding the Fourth Proportional to 81,133.28, 111,953.88 and 45,330.06

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Solution

The fourth proportional to 81,133.28, 111,953.88 and 45,330.06 is: 62,549.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,133.28 : 111,953.88 = 45,330.06 : x
  2. Step 2: Convert to fraction form
    81,133.28/111,953.88 = 45,330.06/x
  3. Step 3: Cross multiply
    81,133.28x = 111,953.88 × 45,330.06
  4. Step 4: Simplify right side
    81,133.28x = 5,074,876,517.46
  5. Step 5: Solve for x
    x = 5,074,876,517.46/81,133.28
  6. Step 6: Final answer
    x = 62,549.88

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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.