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Finding the Fourth Proportional to 69,887, 96,446.22 and 40,079

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Solution

The fourth proportional to 69,887, 96,446.22 and 40,079 is: 55,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,887 : 96,446.22 = 40,079 : x
  2. Step 2: Convert to fraction form
    69,887/96,446.22 = 40,079/x
  3. Step 3: Cross multiply
    69,887x = 96,446.22 × 40,079
  4. Step 4: Simplify right side
    69,887x = 3,865,468,051.38
  5. Step 5: Solve for x
    x = 3,865,468,051.38/69,887
  6. Step 6: Final answer
    x = 55,310.26

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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.