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Finding the Fourth Proportional to 79,640.80, 119,475.60 and 32,898.40

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Solution

The fourth proportional to 79,640.80, 119,475.60 and 32,898.40 is: 49,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,640.80 : 119,475.60 = 32,898.40 : x
  2. Step 2: Convert to fraction form
    79,640.80/119,475.60 = 32,898.40/x
  3. Step 3: Cross multiply
    79,640.80x = 119,475.60 × 32,898.40
  4. Step 4: Simplify right side
    79,640.80x = 3,930,556,079.04
  5. Step 5: Solve for x
    x = 3,930,556,079.04/79,640.80
  6. Step 6: Final answer
    x = 49,353.55

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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.