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Finding the Fourth Proportional to 69,912, 96,437.28 and 49,471.04

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Solution

The fourth proportional to 69,912, 96,437.28 and 49,471.04 is: 68,240.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,912 : 96,437.28 = 49,471.04 : x
  2. Step 2: Convert to fraction form
    69,912/96,437.28 = 49,471.04/x
  3. Step 3: Cross multiply
    69,912x = 96,437.28 × 49,471.04
  4. Step 4: Simplify right side
    69,912x = 4,770,852,536.37
  5. Step 5: Solve for x
    x = 4,770,852,536.37/69,912
  6. Step 6: Final answer
    x = 68,240.82

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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.