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Finding the Fourth Proportional to 48,118.56, 72,002.88 and 39,720.48

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Solution

The fourth proportional to 48,118.56, 72,002.88 and 39,720.48 is: 59,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,118.56 : 72,002.88 = 39,720.48 : x
  2. Step 2: Convert to fraction form
    48,118.56/72,002.88 = 39,720.48/x
  3. Step 3: Cross multiply
    48,118.56x = 72,002.88 × 39,720.48
  4. Step 4: Simplify right side
    48,118.56x = 2,859,988,954.98
  5. Step 5: Solve for x
    x = 2,859,988,954.98/48,118.56
  6. Step 6: Final answer
    x = 59,436.30

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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.