Home / 84,140.88-126,221.04-21,816.24

Finding the Fourth Proportional to 84,140.88, 126,221.04 and 21,816.24

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Solution

The fourth proportional to 84,140.88, 126,221.04 and 21,816.24 is: 32,726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,140.88 : 126,221.04 = 21,816.24 : x
  2. Step 2: Convert to fraction form
    84,140.88/126,221.04 = 21,816.24/x
  3. Step 3: Cross multiply
    84,140.88x = 126,221.04 × 21,816.24
  4. Step 4: Simplify right side
    84,140.88x = 2,753,668,501.69
  5. Step 5: Solve for x
    x = 2,753,668,501.69/84,140.88
  6. Step 6: Final answer
    x = 32,726.88

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1.5x scale

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.