Home / 87,589.84-120,763.28-57,327.16

Finding the Fourth Proportional to 87,589.84, 120,763.28 and 57,327.16

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Solution

The fourth proportional to 87,589.84, 120,763.28 and 57,327.16 is: 79,039.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,589.84 : 120,763.28 = 57,327.16 : x
  2. Step 2: Convert to fraction form
    87,589.84/120,763.28 = 57,327.16/x
  3. Step 3: Cross multiply
    87,589.84x = 120,763.28 × 57,327.16
  4. Step 4: Simplify right side
    87,589.84x = 6,923,015,874.68
  5. Step 5: Solve for x
    x = 6,923,015,874.68/87,589.84
  6. Step 6: Final answer
    x = 79,039.03

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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.