Home / 87,121.40-130,604.67-30,954.11

Finding the Fourth Proportional to 87,121.40, 130,604.67 and 30,954.11

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Solution

The fourth proportional to 87,121.40, 130,604.67 and 30,954.11 is: 46,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,121.40 : 130,604.67 = 30,954.11 : x
  2. Step 2: Convert to fraction form
    87,121.40/130,604.67 = 30,954.11/x
  3. Step 3: Cross multiply
    87,121.40x = 130,604.67 × 30,954.11
  4. Step 4: Simplify right side
    87,121.40x = 4,042,750,668.67
  5. Step 5: Solve for x
    x = 4,042,750,668.67/87,121.40
  6. Step 6: Final answer
    x = 46,403.65

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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.