Home / 87,504,007.80-131,004,069.30-78,434,081.40

Finding the Fourth Proportional to 87,504,007.80, 131,004,069.30 and 78,434,081.40

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Solution

The fourth proportional to 87,504,007.80, 131,004,069.30 and 78,434,081.40 is: 117,425,293.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,504,007.80 : 131,004,069.30 = 78,434,081.40 : x
  2. Step 2: Convert to fraction form
    87,504,007.80/131,004,069.30 = 78,434,081.40/x
  3. Step 3: Cross multiply
    87,504,007.80x = 131,004,069.30 × 78,434,081.40
  4. Step 4: Simplify right side
    87,504,007.80x = 10,275,183,835,207,442
  5. Step 5: Solve for x
    x = 10,275,183,835,207,442/87,504,007.80
  6. Step 6: Final answer
    x = 117,425,293.92

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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.