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Finding the Fourth Proportional to 70,181.44, 105,313.64 and 25,839.28

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Solution

The fourth proportional to 70,181.44, 105,313.64 and 25,839.28 is: 38,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,181.44 : 105,313.64 = 25,839.28 : x
  2. Step 2: Convert to fraction form
    70,181.44/105,313.64 = 25,839.28/x
  3. Step 3: Cross multiply
    70,181.44x = 105,313.64 × 25,839.28
  4. Step 4: Simplify right side
    70,181.44x = 2,721,228,631.78
  5. Step 5: Solve for x
    x = 2,721,228,631.78/70,181.44
  6. Step 6: Final answer
    x = 38,774.19

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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.