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Finding the Fourth Proportional to 79,579.98, 119,371.34 and 26,990.82

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Solution

The fourth proportional to 79,579.98, 119,371.34 and 26,990.82 is: 40,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,579.98 : 119,371.34 = 26,990.82 : x
  2. Step 2: Convert to fraction form
    79,579.98/119,371.34 = 26,990.82/x
  3. Step 3: Cross multiply
    79,579.98x = 119,371.34 × 26,990.82
  4. Step 4: Simplify right side
    79,579.98x = 3,221,930,418.58
  5. Step 5: Solve for x
    x = 3,221,930,418.58/79,579.98
  6. Step 6: Final answer
    x = 40,486.70

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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.