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Finding the Fourth Proportional to 61,151.98, 91,741.74 and 21,709.04

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Solution

The fourth proportional to 61,151.98, 91,741.74 and 21,709.04 is: 32,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151.98 : 91,741.74 = 21,709.04 : x
  2. Step 2: Convert to fraction form
    61,151.98/91,741.74 = 21,709.04/x
  3. Step 3: Cross multiply
    61,151.98x = 91,741.74 × 21,709.04
  4. Step 4: Simplify right side
    61,151.98x = 1,991,625,103.33
  5. Step 5: Solve for x
    x = 1,991,625,103.33/61,151.98
  6. Step 6: Final answer
    x = 32,568.45

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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.