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Finding the Fourth Proportional to 88,698.60, 133,145.10 and 55,456.20

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Solution

The fourth proportional to 88,698.60, 133,145.10 and 55,456.20 is: 83,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,698.60 : 133,145.10 = 55,456.20 : x
  2. Step 2: Convert to fraction form
    88,698.60/133,145.10 = 55,456.20/x
  3. Step 3: Cross multiply
    88,698.60x = 133,145.10 × 55,456.20
  4. Step 4: Simplify right side
    88,698.60x = 7,383,721,294.62
  5. Step 5: Solve for x
    x = 7,383,721,294.62/88,698.60
  6. Step 6: Final answer
    x = 83,245.07

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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.