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Finding the Fourth Proportional to 79,427, 119,115.26 and 26,106.68

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Solution

The fourth proportional to 79,427, 119,115.26 and 26,106.68 is: 39,151.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,427 : 119,115.26 = 26,106.68 : x
  2. Step 2: Convert to fraction form
    79,427/119,115.26 = 26,106.68/x
  3. Step 3: Cross multiply
    79,427x = 119,115.26 × 26,106.68
  4. Step 4: Simplify right side
    79,427x = 3,109,703,975.94
  5. Step 5: Solve for x
    x = 3,109,703,975.94/79,427
  6. Step 6: Final answer
    x = 39,151.72

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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.