Home / 61,211.28-91,816.94-19,687.44

Finding the Fourth Proportional to 61,211.28, 91,816.94 and 19,687.44

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Solution

The fourth proportional to 61,211.28, 91,816.94 and 19,687.44 is: 29,531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,211.28 : 91,816.94 = 19,687.44 : x
  2. Step 2: Convert to fraction form
    61,211.28/91,816.94 = 19,687.44/x
  3. Step 3: Cross multiply
    61,211.28x = 91,816.94 × 19,687.44
  4. Step 4: Simplify right side
    61,211.28x = 1,807,640,497.23
  5. Step 5: Solve for x
    x = 1,807,640,497.23/61,211.28
  6. Step 6: Final answer
    x = 29,531.17

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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.