Home / 72,589.32-100,178.25-40,327.83

Finding the Fourth Proportional to 72,589.32, 100,178.25 and 40,327.83

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Solution

The fourth proportional to 72,589.32, 100,178.25 and 40,327.83 is: 55,655.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,589.32 : 100,178.25 = 40,327.83 : x
  2. Step 2: Convert to fraction form
    72,589.32/100,178.25 = 40,327.83/x
  3. Step 3: Cross multiply
    72,589.32x = 100,178.25 × 40,327.83
  4. Step 4: Simplify right side
    72,589.32x = 4,039,971,435.70
  5. Step 5: Solve for x
    x = 4,039,971,435.70/72,589.32
  6. Step 6: Final answer
    x = 55,655.18

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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.