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Finding the Fourth Proportional to 88,530.80, 132,601.80 and 76,866.80

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Solution

The fourth proportional to 88,530.80, 132,601.80 and 76,866.80 is: 115,131.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,530.80 : 132,601.80 = 76,866.80 : x
  2. Step 2: Convert to fraction form
    88,530.80/132,601.80 = 76,866.80/x
  3. Step 3: Cross multiply
    88,530.80x = 132,601.80 × 76,866.80
  4. Step 4: Simplify right side
    88,530.80x = 10,192,676,040.24
  5. Step 5: Solve for x
    x = 10,192,676,040.24/88,530.80
  6. Step 6: Final answer
    x = 115,131.41

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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.