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Finding the Fourth Proportional to 79,604.60, 119,234.10 and 65,780.60

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Solution

The fourth proportional to 79,604.60, 119,234.10 and 65,780.60 is: 98,528.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,604.60 : 119,234.10 = 65,780.60 : x
  2. Step 2: Convert to fraction form
    79,604.60/119,234.10 = 65,780.60/x
  3. Step 3: Cross multiply
    79,604.60x = 119,234.10 × 65,780.60
  4. Step 4: Simplify right side
    79,604.60x = 7,843,290,638.46
  5. Step 5: Solve for x
    x = 7,843,290,638.46/79,604.60
  6. Step 6: Final answer
    x = 98,528.11

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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.