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Finding the Fourth Proportional to 61,419.60, 92,215.80 and 38,091.60

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Solution

The fourth proportional to 61,419.60, 92,215.80 and 38,091.60 is: 57,190.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,419.60 : 92,215.80 = 38,091.60 : x
  2. Step 2: Convert to fraction form
    61,419.60/92,215.80 = 38,091.60/x
  3. Step 3: Cross multiply
    61,419.60x = 92,215.80 × 38,091.60
  4. Step 4: Simplify right side
    61,419.60x = 3,512,647,367.28
  5. Step 5: Solve for x
    x = 3,512,647,367.28/61,419.60
  6. Step 6: Final answer
    x = 57,190.98

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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.