Home / 87,321.04-131,091-70,006.48

Finding the Fourth Proportional to 87,321.04, 131,091 and 70,006.48

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Solution

The fourth proportional to 87,321.04, 131,091 and 70,006.48 is: 105,097.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,321.04 : 131,091 = 70,006.48 : x
  2. Step 2: Convert to fraction form
    87,321.04/131,091 = 70,006.48/x
  3. Step 3: Cross multiply
    87,321.04x = 131,091 × 70,006.48
  4. Step 4: Simplify right side
    87,321.04x = 9,177,219,469.68
  5. Step 5: Solve for x
    x = 9,177,219,469.68/87,321.04
  6. Step 6: Final answer
    x = 105,097.46

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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.