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Finding the Fourth Proportional to 43,787.20, 65,680.80 and 25,124.80

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Solution

The fourth proportional to 43,787.20, 65,680.80 and 25,124.80 is: 37,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,787.20 : 65,680.80 = 25,124.80 : x
  2. Step 2: Convert to fraction form
    43,787.20/65,680.80 = 25,124.80/x
  3. Step 3: Cross multiply
    43,787.20x = 65,680.80 × 25,124.80
  4. Step 4: Simplify right side
    43,787.20x = 1,650,216,963.84
  5. Step 5: Solve for x
    x = 1,650,216,963.84/43,787.20
  6. Step 6: Final answer
    x = 37,687.20

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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.