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Finding the Fourth Proportional to 64,876.56, 89,531.04 and 36,576.78

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Solution

The fourth proportional to 64,876.56, 89,531.04 and 36,576.78 is: 50,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,876.56 : 89,531.04 = 36,576.78 : x
  2. Step 2: Convert to fraction form
    64,876.56/89,531.04 = 36,576.78/x
  3. Step 3: Cross multiply
    64,876.56x = 89,531.04 × 36,576.78
  4. Step 4: Simplify right side
    64,876.56x = 3,274,757,153.25
  5. Step 5: Solve for x
    x = 3,274,757,153.25/64,876.56
  6. Step 6: Final answer
    x = 50,476.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.