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Finding the Fourth Proportional to 45,713.76, 68,576.04 and 19,403.88

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Solution

The fourth proportional to 45,713.76, 68,576.04 and 19,403.88 is: 29,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,713.76 : 68,576.04 = 19,403.88 : x
  2. Step 2: Convert to fraction form
    45,713.76/68,576.04 = 19,403.88/x
  3. Step 3: Cross multiply
    45,713.76x = 68,576.04 × 19,403.88
  4. Step 4: Simplify right side
    45,713.76x = 1,330,641,251.04
  5. Step 5: Solve for x
    x = 1,330,641,251.04/45,713.76
  6. Step 6: Final answer
    x = 29,108.11

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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.