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Finding the Fourth Proportional to 79,815.20, 119,665.20 and 44,765.60

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Solution

The fourth proportional to 79,815.20, 119,665.20 and 44,765.60 is: 67,116.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,815.20 : 119,665.20 = 44,765.60 : x
  2. Step 2: Convert to fraction form
    79,815.20/119,665.20 = 44,765.60/x
  3. Step 3: Cross multiply
    79,815.20x = 119,665.20 × 44,765.60
  4. Step 4: Simplify right side
    79,815.20x = 5,356,884,477.12
  5. Step 5: Solve for x
    x = 5,356,884,477.12/79,815.20
  6. Step 6: Final answer
    x = 67,116.09

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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.