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Finding the Fourth Proportional to 61,265.64, 91,738.02 and 40,139.22

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Solution

The fourth proportional to 61,265.64, 91,738.02 and 40,139.22 is: 60,103.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,265.64 : 91,738.02 = 40,139.22 : x
  2. Step 2: Convert to fraction form
    61,265.64/91,738.02 = 40,139.22/x
  3. Step 3: Cross multiply
    61,265.64x = 91,738.02 × 40,139.22
  4. Step 4: Simplify right side
    61,265.64x = 3,682,292,567.14
  5. Step 5: Solve for x
    x = 3,682,292,567.14/61,265.64
  6. Step 6: Final answer
    x = 60,103.72

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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.