Home / 87,019.26-120,086.55-51,209.34

Finding the Fourth Proportional to 87,019.26, 120,086.55 and 51,209.34

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Solution

The fourth proportional to 87,019.26, 120,086.55 and 51,209.34 is: 70,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,019.26 : 120,086.55 = 51,209.34 : x
  2. Step 2: Convert to fraction form
    87,019.26/120,086.55 = 51,209.34/x
  3. Step 3: Cross multiply
    87,019.26x = 120,086.55 × 51,209.34
  4. Step 4: Simplify right side
    87,019.26x = 6,149,552,968.38
  5. Step 5: Solve for x
    x = 6,149,552,968.38/87,019.26
  6. Step 6: Final answer
    x = 70,668.87

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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.