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Finding the Fourth Proportional to 61,282.48, 91,923.78 and 19,162.78

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Solution

The fourth proportional to 61,282.48, 91,923.78 and 19,162.78 is: 28,744.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,282.48 : 91,923.78 = 19,162.78 : x
  2. Step 2: Convert to fraction form
    61,282.48/91,923.78 = 19,162.78/x
  3. Step 3: Cross multiply
    61,282.48x = 91,923.78 × 19,162.78
  4. Step 4: Simplify right side
    61,282.48x = 1,761,515,172.91
  5. Step 5: Solve for x
    x = 1,761,515,172.91/61,282.48
  6. Step 6: Final answer
    x = 28,744.19

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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.