Home / 84,302.56-126,439.68-28,137.52

Finding the Fourth Proportional to 84,302.56, 126,439.68 and 28,137.52

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Solution

The fourth proportional to 84,302.56, 126,439.68 and 28,137.52 is: 42,201.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,302.56 : 126,439.68 = 28,137.52 : x
  2. Step 2: Convert to fraction form
    84,302.56/126,439.68 = 28,137.52/x
  3. Step 3: Cross multiply
    84,302.56x = 126,439.68 × 28,137.52
  4. Step 4: Simplify right side
    84,302.56x = 3,557,699,024.79
  5. Step 5: Solve for x
    x = 3,557,699,024.79/84,302.56
  6. Step 6: Final answer
    x = 42,201.55

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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.