Home / 80,530.02-120,780.99-21,371.67

Finding the Fourth Proportional to 80,530.02, 120,780.99 and 21,371.67

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Solution

The fourth proportional to 80,530.02, 120,780.99 and 21,371.67 is: 32,053.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,530.02 : 120,780.99 = 21,371.67 : x
  2. Step 2: Convert to fraction form
    80,530.02/120,780.99 = 21,371.67/x
  3. Step 3: Cross multiply
    80,530.02x = 120,780.99 × 21,371.67
  4. Step 4: Simplify right side
    80,530.02x = 2,581,291,460.55
  5. Step 5: Solve for x
    x = 2,581,291,460.55/80,530.02
  6. Step 6: Final answer
    x = 32,053.78

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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.