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Finding the Fourth Proportional to 61,379.30, 84,751.10 and 47,927.22

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Solution

The fourth proportional to 61,379.30, 84,751.10 and 47,927.22 is: 66,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,379.30 : 84,751.10 = 47,927.22 : x
  2. Step 2: Convert to fraction form
    61,379.30/84,751.10 = 47,927.22/x
  3. Step 3: Cross multiply
    61,379.30x = 84,751.10 × 47,927.22
  4. Step 4: Simplify right side
    61,379.30x = 4,061,884,375.31
  5. Step 5: Solve for x
    x = 4,061,884,375.31/61,379.30
  6. Step 6: Final answer
    x = 66,176.78

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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.