Home / 84,610.44-126,915.96-21,430.53

Finding the Fourth Proportional to 84,610.44, 126,915.96 and 21,430.53

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Solution

The fourth proportional to 84,610.44, 126,915.96 and 21,430.53 is: 32,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,610.44 : 126,915.96 = 21,430.53 : x
  2. Step 2: Convert to fraction form
    84,610.44/126,915.96 = 21,430.53/x
  3. Step 3: Cross multiply
    84,610.44x = 126,915.96 × 21,430.53
  4. Step 4: Simplify right side
    84,610.44x = 2,719,876,288.26
  5. Step 5: Solve for x
    x = 2,719,876,288.26/84,610.44
  6. Step 6: Final answer
    x = 32,145.87

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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.