Home / 80,213.83-120,538.85-42,800.33

Finding the Fourth Proportional to 80,213.83, 120,538.85 and 42,800.33

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Solution

The fourth proportional to 80,213.83, 120,538.85 and 42,800.33 is: 64,316.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,213.83 : 120,538.85 = 42,800.33 : x
  2. Step 2: Convert to fraction form
    80,213.83/120,538.85 = 42,800.33/x
  3. Step 3: Cross multiply
    80,213.83x = 120,538.85 × 42,800.33
  4. Step 4: Simplify right side
    80,213.83x = 5,159,102,645.17
  5. Step 5: Solve for x
    x = 5,159,102,645.17/80,213.83
  6. Step 6: Final answer
    x = 64,316.87

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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.