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Finding the Fourth Proportional to 72,851.67, 108,766.44 and 61,644.65

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Solution

The fourth proportional to 72,851.67, 108,766.44 and 61,644.65 is: 92,034.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,851.67 : 108,766.44 = 61,644.65 : x
  2. Step 2: Convert to fraction form
    72,851.67/108,766.44 = 61,644.65/x
  3. Step 3: Cross multiply
    72,851.67x = 108,766.44 × 61,644.65
  4. Step 4: Simplify right side
    72,851.67x = 6,704,868,581.71
  5. Step 5: Solve for x
    x = 6,704,868,581.71/72,851.67
  6. Step 6: Final answer
    x = 92,034.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.