Home / 87,007.08-120,069.78-49,281.33

Finding the Fourth Proportional to 87,007.08, 120,069.78 and 49,281.33

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Solution

The fourth proportional to 87,007.08, 120,069.78 and 49,281.33 is: 68,008.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,007.08 : 120,069.78 = 49,281.33 : x
  2. Step 2: Convert to fraction form
    87,007.08/120,069.78 = 49,281.33/x
  3. Step 3: Cross multiply
    87,007.08x = 120,069.78 × 49,281.33
  4. Step 4: Simplify right side
    87,007.08x = 5,917,198,041.27
  5. Step 5: Solve for x
    x = 5,917,198,041.27/87,007.08
  6. Step 6: Final answer
    x = 68,008.24

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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.