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Finding the Fourth Proportional to 61,160.41, 91,754.43 and 21,717.55

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Solution

The fourth proportional to 61,160.41, 91,754.43 and 21,717.55 is: 32,581.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,160.41 : 91,754.43 = 21,717.55 : x
  2. Step 2: Convert to fraction form
    61,160.41/91,754.43 = 21,717.55/x
  3. Step 3: Cross multiply
    61,160.41x = 91,754.43 × 21,717.55
  4. Step 4: Simplify right side
    61,160.41x = 1,992,681,421.25
  5. Step 5: Solve for x
    x = 1,992,681,421.25/61,160.41
  6. Step 6: Final answer
    x = 32,581.23

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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.