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Finding the Fourth Proportional to 53,787.44, 80,667.45 and 38,139.45

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Solution

The fourth proportional to 53,787.44, 80,667.45 and 38,139.45 is: 57,199.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,787.44 : 80,667.45 = 38,139.45 : x
  2. Step 2: Convert to fraction form
    53,787.44/80,667.45 = 38,139.45/x
  3. Step 3: Cross multiply
    53,787.44x = 80,667.45 × 38,139.45
  4. Step 4: Simplify right side
    53,787.44x = 3,076,612,175.90
  5. Step 5: Solve for x
    x = 3,076,612,175.90/53,787.44
  6. Step 6: Final answer
    x = 57,199.45

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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.