Home / 84,861.12-127,327.68-45,408

Finding the Fourth Proportional to 84,861.12, 127,327.68 and 45,408

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Solution

The fourth proportional to 84,861.12, 127,327.68 and 45,408 is: 68,131.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,861.12 : 127,327.68 = 45,408 : x
  2. Step 2: Convert to fraction form
    84,861.12/127,327.68 = 45,408/x
  3. Step 3: Cross multiply
    84,861.12x = 127,327.68 × 45,408
  4. Step 4: Simplify right side
    84,861.12x = 5,781,695,293.44
  5. Step 5: Solve for x
    x = 5,781,695,293.44/84,861.12
  6. Step 6: Final answer
    x = 68,131.26

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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.