Home / 84,257.28-126,216.36-39,926.78

Finding the Fourth Proportional to 84,257.28, 126,216.36 and 39,926.78

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Solution

The fourth proportional to 84,257.28, 126,216.36 and 39,926.78 is: 59,809.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,257.28 : 126,216.36 = 39,926.78 : x
  2. Step 2: Convert to fraction form
    84,257.28/126,216.36 = 39,926.78/x
  3. Step 3: Cross multiply
    84,257.28x = 126,216.36 × 39,926.78
  4. Step 4: Simplify right side
    84,257.28x = 5,039,412,838.12
  5. Step 5: Solve for x
    x = 5,039,412,838.12/84,257.28
  6. Step 6: Final answer
    x = 59,809.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.