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Finding the Fourth Proportional to 84,503.10, 126,753.15 and 33,915

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Solution

The fourth proportional to 84,503.10, 126,753.15 and 33,915 is: 50,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,503.10 : 126,753.15 = 33,915 : x
  2. Step 2: Convert to fraction form
    84,503.10/126,753.15 = 33,915/x
  3. Step 3: Cross multiply
    84,503.10x = 126,753.15 × 33,915
  4. Step 4: Simplify right side
    84,503.10x = 4,298,833,082.25
  5. Step 5: Solve for x
    x = 4,298,833,082.25/84,503.10
  6. Step 6: Final answer
    x = 50,871.90

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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.