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Finding the Fourth Proportional to 79,908.78, 119,876.16 and 29,992.80

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Solution

The fourth proportional to 79,908.78, 119,876.16 and 29,992.80 is: 44,994.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,908.78 : 119,876.16 = 29,992.80 : x
  2. Step 2: Convert to fraction form
    79,908.78/119,876.16 = 29,992.80/x
  3. Step 3: Cross multiply
    79,908.78x = 119,876.16 × 29,992.80
  4. Step 4: Simplify right side
    79,908.78x = 3,595,421,691.65
  5. Step 5: Solve for x
    x = 3,595,421,691.65/79,908.78
  6. Step 6: Final answer
    x = 44,994.08

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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.