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Finding the Fourth Proportional to 69,258.44, 103,872.78 and 21,877.29

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Solution

The fourth proportional to 69,258.44, 103,872.78 and 21,877.29 is: 32,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,258.44 : 103,872.78 = 21,877.29 : x
  2. Step 2: Convert to fraction form
    69,258.44/103,872.78 = 21,877.29/x
  3. Step 3: Cross multiply
    69,258.44x = 103,872.78 × 21,877.29
  4. Step 4: Simplify right side
    69,258.44x = 2,272,454,931.17
  5. Step 5: Solve for x
    x = 2,272,454,931.17/69,258.44
  6. Step 6: Final answer
    x = 32,811.23

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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.