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Finding the Fourth Proportional to 61,151.54, 91,736.42 and 21,705.36

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Solution

The fourth proportional to 61,151.54, 91,736.42 and 21,705.36 is: 32,561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151.54 : 91,736.42 = 21,705.36 : x
  2. Step 2: Convert to fraction form
    61,151.54/91,736.42 = 21,705.36/x
  3. Step 3: Cross multiply
    61,151.54x = 91,736.42 × 21,705.36
  4. Step 4: Simplify right side
    61,151.54x = 1,991,172,021.21
  5. Step 5: Solve for x
    x = 1,991,172,021.21/61,151.54
  6. Step 6: Final answer
    x = 32,561.27

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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.