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Finding the Fourth Proportional to 52,877.64, 79,320.78 and 21,713.16

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Solution

The fourth proportional to 52,877.64, 79,320.78 and 21,713.16 is: 32,571.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,877.64 : 79,320.78 = 21,713.16 : x
  2. Step 2: Convert to fraction form
    52,877.64/79,320.78 = 21,713.16/x
  3. Step 3: Cross multiply
    52,877.64x = 79,320.78 × 21,713.16
  4. Step 4: Simplify right side
    52,877.64x = 1,722,304,787.46
  5. Step 5: Solve for x
    x = 1,722,304,787.46/52,877.64
  6. Step 6: Final answer
    x = 32,571.51

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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.