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Finding the Fourth Proportional to 52,744.32, 72,787.68 and 28,871.28

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Solution

The fourth proportional to 52,744.32, 72,787.68 and 28,871.28 is: 39,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,744.32 : 72,787.68 = 28,871.28 : x
  2. Step 2: Convert to fraction form
    52,744.32/72,787.68 = 28,871.28/x
  3. Step 3: Cross multiply
    52,744.32x = 72,787.68 × 28,871.28
  4. Step 4: Simplify right side
    52,744.32x = 2,101,473,489.83
  5. Step 5: Solve for x
    x = 2,101,473,489.83/52,744.32
  6. Step 6: Final answer
    x = 39,842.65

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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.