Home / 87,420.46-120,638.92-49,177.12

Finding the Fourth Proportional to 87,420.46, 120,638.92 and 49,177.12

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Solution

The fourth proportional to 87,420.46, 120,638.92 and 49,177.12 is: 67,863.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.46 : 120,638.92 = 49,177.12 : x
  2. Step 2: Convert to fraction form
    87,420.46/120,638.92 = 49,177.12/x
  3. Step 3: Cross multiply
    87,420.46x = 120,638.92 × 49,177.12
  4. Step 4: Simplify right side
    87,420.46x = 5,932,674,645.51
  5. Step 5: Solve for x
    x = 5,932,674,645.51/87,420.46
  6. Step 6: Final answer
    x = 67,863.69

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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.