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Finding the Fourth Proportional to 61,139.39, 91,699.25 and 16,755.75

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Solution

The fourth proportional to 61,139.39, 91,699.25 and 16,755.75 is: 25,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,139.39 : 91,699.25 = 16,755.75 : x
  2. Step 2: Convert to fraction form
    61,139.39/91,699.25 = 16,755.75/x
  3. Step 3: Cross multiply
    61,139.39x = 91,699.25 × 16,755.75
  4. Step 4: Simplify right side
    61,139.39x = 1,536,489,624.41
  5. Step 5: Solve for x
    x = 1,536,489,624.41/61,139.39
  6. Step 6: Final answer
    x = 25,130.93

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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.