Home / 84,240.71-126,318.79-28,061.24

Finding the Fourth Proportional to 84,240.71, 126,318.79 and 28,061.24

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Solution

The fourth proportional to 84,240.71, 126,318.79 and 28,061.24 is: 42,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,240.71 : 126,318.79 = 28,061.24 : x
  2. Step 2: Convert to fraction form
    84,240.71/126,318.79 = 28,061.24/x
  3. Step 3: Cross multiply
    84,240.71x = 126,318.79 × 28,061.24
  4. Step 4: Simplify right side
    84,240.71x = 3,544,661,286.18
  5. Step 5: Solve for x
    x = 3,544,661,286.18/84,240.71
  6. Step 6: Final answer
    x = 42,077.77

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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.