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Finding the Fourth Proportional to 77,388.44, 116,082.81 and 21,229.32

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Solution

The fourth proportional to 77,388.44, 116,082.81 and 21,229.32 is: 31,844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,388.44 : 116,082.81 = 21,229.32 : x
  2. Step 2: Convert to fraction form
    77,388.44/116,082.81 = 21,229.32/x
  3. Step 3: Cross multiply
    77,388.44x = 116,082.81 × 21,229.32
  4. Step 4: Simplify right side
    77,388.44x = 2,464,358,546.00
  5. Step 5: Solve for x
    x = 2,464,358,546.00/77,388.44
  6. Step 6: Final answer
    x = 31,844.01

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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.