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Finding the Fourth Proportional to 79,609.71, 119,316.14 and 40,178.10

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Solution

The fourth proportional to 79,609.71, 119,316.14 and 40,178.10 is: 60,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,609.71 : 119,316.14 = 40,178.10 : x
  2. Step 2: Convert to fraction form
    79,609.71/119,316.14 = 40,178.10/x
  3. Step 3: Cross multiply
    79,609.71x = 119,316.14 × 40,178.10
  4. Step 4: Simplify right side
    79,609.71x = 4,793,895,804.53
  5. Step 5: Solve for x
    x = 4,793,895,804.53/79,609.71
  6. Step 6: Final answer
    x = 60,217.48

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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.