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Finding the Fourth Proportional to 69,354.32, 104,047.10 and 21,972.28

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Solution

The fourth proportional to 69,354.32, 104,047.10 and 21,972.28 is: 32,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,354.32 : 104,047.10 = 21,972.28 : x
  2. Step 2: Convert to fraction form
    69,354.32/104,047.10 = 21,972.28/x
  3. Step 3: Cross multiply
    69,354.32x = 104,047.10 × 21,972.28
  4. Step 4: Simplify right side
    69,354.32x = 2,286,152,014.39
  5. Step 5: Solve for x
    x = 2,286,152,014.39/69,354.32
  6. Step 6: Final answer
    x = 32,963.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.