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Finding the Fourth Proportional to 61,028.40, 91,581.48 and 25,968

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Solution

The fourth proportional to 61,028.40, 91,581.48 and 25,968 is: 38,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,028.40 : 91,581.48 = 25,968 : x
  2. Step 2: Convert to fraction form
    61,028.40/91,581.48 = 25,968/x
  3. Step 3: Cross multiply
    61,028.40x = 91,581.48 × 25,968
  4. Step 4: Simplify right side
    61,028.40x = 2,378,187,872.64
  5. Step 5: Solve for x
    x = 2,378,187,872.64/61,028.40
  6. Step 6: Final answer
    x = 38,968.54

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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.