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Finding the Fourth Proportional to 61,993.69, 85,472.10 and 40,151.38

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Solution

The fourth proportional to 61,993.69, 85,472.10 and 40,151.38 is: 55,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,993.69 : 85,472.10 = 40,151.38 : x
  2. Step 2: Convert to fraction form
    61,993.69/85,472.10 = 40,151.38/x
  3. Step 3: Cross multiply
    61,993.69x = 85,472.10 × 40,151.38
  4. Step 4: Simplify right side
    61,993.69x = 3,431,822,766.50
  5. Step 5: Solve for x
    x = 3,431,822,766.50/61,993.69
  6. Step 6: Final answer
    x = 55,357.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.