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Finding the Fourth Proportional to 61,171.36, 91,766.16 and 21,725.16

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Solution

The fourth proportional to 61,171.36, 91,766.16 and 21,725.16 is: 32,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,171.36 : 91,766.16 = 21,725.16 : x
  2. Step 2: Convert to fraction form
    61,171.36/91,766.16 = 21,725.16/x
  3. Step 3: Cross multiply
    61,171.36x = 91,766.16 × 21,725.16
  4. Step 4: Simplify right side
    61,171.36x = 1,993,634,508.59
  5. Step 5: Solve for x
    x = 1,993,634,508.59/61,171.36
  6. Step 6: Final answer
    x = 32,590.98

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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.