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Finding the Fourth Proportional to 88,790.80, 133,040.40 and 73,919.20

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Solution

The fourth proportional to 88,790.80, 133,040.40 and 73,919.20 is: 110,757.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,790.80 : 133,040.40 = 73,919.20 : x
  2. Step 2: Convert to fraction form
    88,790.80/133,040.40 = 73,919.20/x
  3. Step 3: Cross multiply
    88,790.80x = 133,040.40 × 73,919.20
  4. Step 4: Simplify right side
    88,790.80x = 9,834,239,935.68
  5. Step 5: Solve for x
    x = 9,834,239,935.68/88,790.80
  6. Step 6: Final answer
    x = 110,757.42

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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.