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Finding the Fourth Proportional to 61,008.60, 91,447.38 and 39,882.36

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Solution

The fourth proportional to 61,008.60, 91,447.38 and 39,882.36 is: 59,780.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,008.60 : 91,447.38 = 39,882.36 : x
  2. Step 2: Convert to fraction form
    61,008.60/91,447.38 = 39,882.36/x
  3. Step 3: Cross multiply
    61,008.60x = 91,447.38 × 39,882.36
  4. Step 4: Simplify right side
    61,008.60x = 3,647,137,330.22
  5. Step 5: Solve for x
    x = 3,647,137,330.22/61,008.60
  6. Step 6: Final answer
    x = 59,780.71

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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.