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Finding the Fourth Proportional to 84,756.96, 127,171.98 and 40,383.90

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Solution

The fourth proportional to 84,756.96, 127,171.98 and 40,383.90 is: 60,593.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,756.96 : 127,171.98 = 40,383.90 : x
  2. Step 2: Convert to fraction form
    84,756.96/127,171.98 = 40,383.90/x
  3. Step 3: Cross multiply
    84,756.96x = 127,171.98 × 40,383.90
  4. Step 4: Simplify right side
    84,756.96x = 5,135,700,523.12
  5. Step 5: Solve for x
    x = 5,135,700,523.12/84,756.96
  6. Step 6: Final answer
    x = 60,593.26

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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.