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Finding the Fourth Proportional to 61,022.77, 91,531.42 and 21,580.22

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Solution

The fourth proportional to 61,022.77, 91,531.42 and 21,580.22 is: 32,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,022.77 : 91,531.42 = 21,580.22 : x
  2. Step 2: Convert to fraction form
    61,022.77/91,531.42 = 21,580.22/x
  3. Step 3: Cross multiply
    61,022.77x = 91,531.42 × 21,580.22
  4. Step 4: Simplify right side
    61,022.77x = 1,975,268,355.39
  5. Step 5: Solve for x
    x = 1,975,268,355.39/61,022.77
  6. Step 6: Final answer
    x = 32,369.37

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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.