Home / 87,696.11-120,939.89-57,470.45

Finding the Fourth Proportional to 87,696.11, 120,939.89 and 57,470.45

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Solution

The fourth proportional to 87,696.11, 120,939.89 and 57,470.45 is: 79,256.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,696.11 : 120,939.89 = 57,470.45 : x
  2. Step 2: Convert to fraction form
    87,696.11/120,939.89 = 57,470.45/x
  3. Step 3: Cross multiply
    87,696.11x = 120,939.89 × 57,470.45
  4. Step 4: Simplify right side
    87,696.11x = 6,950,469,009.20
  5. Step 5: Solve for x
    x = 6,950,469,009.20/87,696.11
  6. Step 6: Final answer
    x = 79,256.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.