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Finding the Fourth Proportional to 80,145.06, 120,228.53 and 33,387

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Solution

The fourth proportional to 80,145.06, 120,228.53 and 33,387 is: 50,085.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,145.06 : 120,228.53 = 33,387 : x
  2. Step 2: Convert to fraction form
    80,145.06/120,228.53 = 33,387/x
  3. Step 3: Cross multiply
    80,145.06x = 120,228.53 × 33,387
  4. Step 4: Simplify right side
    80,145.06x = 4,014,069,931.11
  5. Step 5: Solve for x
    x = 4,014,069,931.11/80,145.06
  6. Step 6: Final answer
    x = 50,085.06

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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.