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Finding the Fourth Proportional to 84,549.53, 126,764.21 and 42,399.20

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Solution

The fourth proportional to 84,549.53, 126,764.21 and 42,399.20 is: 63,568.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,549.53 : 126,764.21 = 42,399.20 : x
  2. Step 2: Convert to fraction form
    84,549.53/126,764.21 = 42,399.20/x
  3. Step 3: Cross multiply
    84,549.53x = 126,764.21 × 42,399.20
  4. Step 4: Simplify right side
    84,549.53x = 5,374,700,246.81
  5. Step 5: Solve for x
    x = 5,374,700,246.81/84,549.53
  6. Step 6: Final answer
    x = 63,568.66

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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.