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Finding the Fourth Proportional to 45,304.76, 67,944.02 and 15,721.40

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Solution

The fourth proportional to 45,304.76, 67,944.02 and 15,721.40 is: 23,577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,304.76 : 67,944.02 = 15,721.40 : x
  2. Step 2: Convert to fraction form
    45,304.76/67,944.02 = 15,721.40/x
  3. Step 3: Cross multiply
    45,304.76x = 67,944.02 × 15,721.40
  4. Step 4: Simplify right side
    45,304.76x = 1,068,175,116.03
  5. Step 5: Solve for x
    x = 1,068,175,116.03/45,304.76
  6. Step 6: Final answer
    x = 23,577.55

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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.