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Finding the Fourth Proportional to 61,218.60, 91,856.15 and 27,948.86

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Solution

The fourth proportional to 61,218.60, 91,856.15 and 27,948.86 is: 41,936.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,218.60 : 91,856.15 = 27,948.86 : x
  2. Step 2: Convert to fraction form
    61,218.60/91,856.15 = 27,948.86/x
  3. Step 3: Cross multiply
    61,218.60x = 91,856.15 × 27,948.86
  4. Step 4: Simplify right side
    61,218.60x = 2,567,274,676.49
  5. Step 5: Solve for x
    x = 2,567,274,676.49/61,218.60
  6. Step 6: Final answer
    x = 41,936.19

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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.