Home / 78,473.20-117,768.16-36,949.36

Finding the Fourth Proportional to 78,473.20, 117,768.16 and 36,949.36

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Solution

The fourth proportional to 78,473.20, 117,768.16 and 36,949.36 is: 55,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,473.20 : 117,768.16 = 36,949.36 : x
  2. Step 2: Convert to fraction form
    78,473.20/117,768.16 = 36,949.36/x
  3. Step 3: Cross multiply
    78,473.20x = 117,768.16 × 36,949.36
  4. Step 4: Simplify right side
    78,473.20x = 4,351,458,140.38
  5. Step 5: Solve for x
    x = 4,351,458,140.38/78,473.20
  6. Step 6: Final answer
    x = 55,451.52

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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.