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Finding the Fourth Proportional to 88,511.31, 132,619.11 and 38,516.49

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Solution

The fourth proportional to 88,511.31, 132,619.11 and 38,516.49 is: 57,710.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,511.31 : 132,619.11 = 38,516.49 : x
  2. Step 2: Convert to fraction form
    88,511.31/132,619.11 = 38,516.49/x
  3. Step 3: Cross multiply
    88,511.31x = 132,619.11 × 38,516.49
  4. Step 4: Simplify right side
    88,511.31x = 5,108,022,624.12
  5. Step 5: Solve for x
    x = 5,108,022,624.12/88,511.31
  6. Step 6: Final answer
    x = 57,710.39

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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.