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Finding the Fourth Proportional to 84,484.44, 126,721.80 and 28,322.28

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Solution

The fourth proportional to 84,484.44, 126,721.80 and 28,322.28 is: 42,481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,484.44 : 126,721.80 = 28,322.28 : x
  2. Step 2: Convert to fraction form
    84,484.44/126,721.80 = 28,322.28/x
  3. Step 3: Cross multiply
    84,484.44x = 126,721.80 × 28,322.28
  4. Step 4: Simplify right side
    84,484.44x = 3,589,050,301.70
  5. Step 5: Solve for x
    x = 3,589,050,301.70/84,484.44
  6. Step 6: Final answer
    x = 42,481.79

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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.