Home / 84,261.30-126,408.52-28,100.66

Finding the Fourth Proportional to 84,261.30, 126,408.52 and 28,100.66

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Solution

The fourth proportional to 84,261.30, 126,408.52 and 28,100.66 is: 42,156.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,261.30 : 126,408.52 = 28,100.66 : x
  2. Step 2: Convert to fraction form
    84,261.30/126,408.52 = 28,100.66/x
  3. Step 3: Cross multiply
    84,261.30x = 126,408.52 × 28,100.66
  4. Step 4: Simplify right side
    84,261.30x = 3,552,162,841.62
  5. Step 5: Solve for x
    x = 3,552,162,841.62/84,261.30
  6. Step 6: Final answer
    x = 42,156.52

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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.