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Finding the Fourth Proportional to 69,418, 95,814.12 and 39,627.28

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Solution

The fourth proportional to 69,418, 95,814.12 and 39,627.28 is: 54,695.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,418 : 95,814.12 = 39,627.28 : x
  2. Step 2: Convert to fraction form
    69,418/95,814.12 = 39,627.28/x
  3. Step 3: Cross multiply
    69,418x = 95,814.12 × 39,627.28
  4. Step 4: Simplify right side
    69,418x = 3,796,852,961.19
  5. Step 5: Solve for x
    x = 3,796,852,961.19/69,418
  6. Step 6: Final answer
    x = 54,695.51

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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.