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Finding the Fourth Proportional to 112,862.44, 155,741.56 and 61,867

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Solution

The fourth proportional to 112,862.44, 155,741.56 and 61,867 is: 85,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,862.44 : 155,741.56 = 61,867 : x
  2. Step 2: Convert to fraction form
    112,862.44/155,741.56 = 61,867/x
  3. Step 3: Cross multiply
    112,862.44x = 155,741.56 × 61,867
  4. Step 4: Simplify right side
    112,862.44x = 9,635,263,092.52
  5. Step 5: Solve for x
    x = 9,635,263,092.52/112,862.44
  6. Step 6: Final answer
    x = 85,371.74

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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.