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Finding the Fourth Proportional to 56,712.69, 85,081.69 and 17,272.85

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Solution

The fourth proportional to 56,712.69, 85,081.69 and 17,272.85 is: 25,913.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,712.69 : 85,081.69 = 17,272.85 : x
  2. Step 2: Convert to fraction form
    56,712.69/85,081.69 = 17,272.85/x
  3. Step 3: Cross multiply
    56,712.69x = 85,081.69 × 17,272.85
  4. Step 4: Simplify right side
    56,712.69x = 1,469,602,865.30
  5. Step 5: Solve for x
    x = 1,469,602,865.30/56,712.69
  6. Step 6: Final answer
    x = 25,913.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.