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Finding the Fourth Proportional to 80,479.66, 120,837.99 and 45,010.47

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Solution

The fourth proportional to 80,479.66, 120,837.99 and 45,010.47 is: 67,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,479.66 : 120,837.99 = 45,010.47 : x
  2. Step 2: Convert to fraction form
    80,479.66/120,837.99 = 45,010.47/x
  3. Step 3: Cross multiply
    80,479.66x = 120,837.99 × 45,010.47
  4. Step 4: Simplify right side
    80,479.66x = 5,438,974,723.76
  5. Step 5: Solve for x
    x = 5,438,974,723.76/80,479.66
  6. Step 6: Final answer
    x = 67,581.98

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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.