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Finding the Fourth Proportional to 79,819.80, 119,672.10 and 52,133.40

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Solution

The fourth proportional to 79,819.80, 119,672.10 and 52,133.40 is: 78,162.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,819.80 : 119,672.10 = 52,133.40 : x
  2. Step 2: Convert to fraction form
    79,819.80/119,672.10 = 52,133.40/x
  3. Step 3: Cross multiply
    79,819.80x = 119,672.10 × 52,133.40
  4. Step 4: Simplify right side
    79,819.80x = 6,238,913,458.14
  5. Step 5: Solve for x
    x = 6,238,913,458.14/79,819.80
  6. Step 6: Final answer
    x = 78,162.48

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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.