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Finding the Fourth Proportional to 88,789.70, 133,071.15 and 36,139.70

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Solution

The fourth proportional to 88,789.70, 133,071.15 and 36,139.70 is: 54,163.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,789.70 : 133,071.15 = 36,139.70 : x
  2. Step 2: Convert to fraction form
    88,789.70/133,071.15 = 36,139.70/x
  3. Step 3: Cross multiply
    88,789.70x = 133,071.15 × 36,139.70
  4. Step 4: Simplify right side
    88,789.70x = 4,809,151,439.66
  5. Step 5: Solve for x
    x = 4,809,151,439.66/88,789.70
  6. Step 6: Final answer
    x = 54,163.39

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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.