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Finding the Fourth Proportional to 79,340.72, 119,012.79 and 28,744.26

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Solution

The fourth proportional to 79,340.72, 119,012.79 and 28,744.26 is: 43,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,340.72 : 119,012.79 = 28,744.26 : x
  2. Step 2: Convert to fraction form
    79,340.72/119,012.79 = 28,744.26/x
  3. Step 3: Cross multiply
    79,340.72x = 119,012.79 × 28,744.26
  4. Step 4: Simplify right side
    79,340.72x = 3,420,934,240.58
  5. Step 5: Solve for x
    x = 3,420,934,240.58/79,340.72
  6. Step 6: Final answer
    x = 43,117.01

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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.