Home / 85,610.18-118,142.34-47,882

Finding the Fourth Proportional to 85,610.18, 118,142.34 and 47,882

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Solution

The fourth proportional to 85,610.18, 118,142.34 and 47,882 is: 66,077.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,610.18 : 118,142.34 = 47,882 : x
  2. Step 2: Convert to fraction form
    85,610.18/118,142.34 = 47,882/x
  3. Step 3: Cross multiply
    85,610.18x = 118,142.34 × 47,882
  4. Step 4: Simplify right side
    85,610.18x = 5,656,891,523.88
  5. Step 5: Solve for x
    x = 5,656,891,523.88/85,610.18
  6. Step 6: Final answer
    x = 66,077.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.