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Finding the Fourth Proportional to 45,751.87, 68,647.53 and 17,691.68

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Solution

The fourth proportional to 45,751.87, 68,647.53 and 17,691.68 is: 26,545.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,751.87 : 68,647.53 = 17,691.68 : x
  2. Step 2: Convert to fraction form
    45,751.87/68,647.53 = 17,691.68/x
  3. Step 3: Cross multiply
    45,751.87x = 68,647.53 × 17,691.68
  4. Step 4: Simplify right side
    45,751.87x = 1,214,490,133.55
  5. Step 5: Solve for x
    x = 1,214,490,133.55/45,751.87
  6. Step 6: Final answer
    x = 26,545.15

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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.