Home / 86,285.44-129,391.10-30,108.70

Finding the Fourth Proportional to 86,285.44, 129,391.10 and 30,108.70

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Solution

The fourth proportional to 86,285.44, 129,391.10 and 30,108.70 is: 45,150.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,285.44 : 129,391.10 = 30,108.70 : x
  2. Step 2: Convert to fraction form
    86,285.44/129,391.10 = 30,108.70/x
  3. Step 3: Cross multiply
    86,285.44x = 129,391.10 × 30,108.70
  4. Step 4: Simplify right side
    86,285.44x = 3,895,797,812.57
  5. Step 5: Solve for x
    x = 3,895,797,812.57/86,285.44
  6. Step 6: Final answer
    x = 45,150.12

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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.