Home / 84,221.10-126,331.38-57,845.88

Finding the Fourth Proportional to 84,221.10, 126,331.38 and 57,845.88

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Solution

The fourth proportional to 84,221.10, 126,331.38 and 57,845.88 is: 86,768.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,221.10 : 126,331.38 = 57,845.88 : x
  2. Step 2: Convert to fraction form
    84,221.10/126,331.38 = 57,845.88/x
  3. Step 3: Cross multiply
    84,221.10x = 126,331.38 × 57,845.88
  4. Step 4: Simplify right side
    84,221.10x = 7,307,749,847.71
  5. Step 5: Solve for x
    x = 7,307,749,847.71/84,221.10
  6. Step 6: Final answer
    x = 86,768.63

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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.