Home / 87,206.57-120,330.59-51,391.72

Finding the Fourth Proportional to 87,206.57, 120,330.59 and 51,391.72

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Solution

The fourth proportional to 87,206.57, 120,330.59 and 51,391.72 is: 70,912.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,206.57 : 120,330.59 = 51,391.72 : x
  2. Step 2: Convert to fraction form
    87,206.57/120,330.59 = 51,391.72/x
  3. Step 3: Cross multiply
    87,206.57x = 120,330.59 × 51,391.72
  4. Step 4: Simplify right side
    87,206.57x = 6,183,995,988.71
  5. Step 5: Solve for x
    x = 6,183,995,988.71/87,206.57
  6. Step 6: Final answer
    x = 70,912.04

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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.