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Finding the Fourth Proportional to 84,344.88, 126,530.28 and 28,167.60

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Solution

The fourth proportional to 84,344.88, 126,530.28 and 28,167.60 is: 42,255.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,344.88 : 126,530.28 = 28,167.60 : x
  2. Step 2: Convert to fraction form
    84,344.88/126,530.28 = 28,167.60/x
  3. Step 3: Cross multiply
    84,344.88x = 126,530.28 × 28,167.60
  4. Step 4: Simplify right side
    84,344.88x = 3,564,054,314.93
  5. Step 5: Solve for x
    x = 3,564,054,314.93/84,344.88
  6. Step 6: Final answer
    x = 42,255.73

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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.