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Finding the Fourth Proportional to 79,412.82, 119,119.14 and 61,895.76

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Solution

The fourth proportional to 79,412.82, 119,119.14 and 61,895.76 is: 92,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,412.82 : 119,119.14 = 61,895.76 : x
  2. Step 2: Convert to fraction form
    79,412.82/119,119.14 = 61,895.76/x
  3. Step 3: Cross multiply
    79,412.82x = 119,119.14 × 61,895.76
  4. Step 4: Simplify right side
    79,412.82x = 7,372,969,700.85
  5. Step 5: Solve for x
    x = 7,372,969,700.85/79,412.82
  6. Step 6: Final answer
    x = 92,843.57

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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.