Home / 80,418.32-120,666.78-56,877.16

Finding the Fourth Proportional to 80,418.32, 120,666.78 and 56,877.16

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Solution

The fourth proportional to 80,418.32, 120,666.78 and 56,877.16 is: 85,343.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,418.32 : 120,666.78 = 56,877.16 : x
  2. Step 2: Convert to fraction form
    80,418.32/120,666.78 = 56,877.16/x
  3. Step 3: Cross multiply
    80,418.32x = 120,666.78 × 56,877.16
  4. Step 4: Simplify right side
    80,418.32x = 6,863,183,451.08
  5. Step 5: Solve for x
    x = 6,863,183,451.08/80,418.32
  6. Step 6: Final answer
    x = 85,343.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.