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Finding the Fourth Proportional to 40,680.84, 60,974.40 and 15,709.88

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Solution

The fourth proportional to 40,680.84, 60,974.40 and 15,709.88 is: 23,546.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,680.84 : 60,974.40 = 15,709.88 : x
  2. Step 2: Convert to fraction form
    40,680.84/60,974.40 = 15,709.88/x
  3. Step 3: Cross multiply
    40,680.84x = 60,974.40 × 15,709.88
  4. Step 4: Simplify right side
    40,680.84x = 957,900,507.07
  5. Step 5: Solve for x
    x = 957,900,507.07/40,680.84
  6. Step 6: Final answer
    x = 23,546.72

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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.