Home / 87,400.32-120,622.80-49,680.24

Finding the Fourth Proportional to 87,400.32, 120,622.80 and 49,680.24

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Solution

The fourth proportional to 87,400.32, 120,622.80 and 49,680.24 is: 68,564.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,400.32 : 120,622.80 = 49,680.24 : x
  2. Step 2: Convert to fraction form
    87,400.32/120,622.80 = 49,680.24/x
  3. Step 3: Cross multiply
    87,400.32x = 120,622.80 × 49,680.24
  4. Step 4: Simplify right side
    87,400.32x = 5,992,569,653.47
  5. Step 5: Solve for x
    x = 5,992,569,653.47/87,400.32
  6. Step 6: Final answer
    x = 68,564.62

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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.