Home / 87,313.72-120,507.38-51,512.48

Finding the Fourth Proportional to 87,313.72, 120,507.38 and 51,512.48

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Solution

The fourth proportional to 87,313.72, 120,507.38 and 51,512.48 is: 71,095.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,313.72 : 120,507.38 = 51,512.48 : x
  2. Step 2: Convert to fraction form
    87,313.72/120,507.38 = 51,512.48/x
  3. Step 3: Cross multiply
    87,313.72x = 120,507.38 × 51,512.48
  4. Step 4: Simplify right side
    87,313.72x = 6,207,634,002.10
  5. Step 5: Solve for x
    x = 6,207,634,002.10/87,313.72
  6. Step 6: Final answer
    x = 71,095.75

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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.