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Finding the Fourth Proportional to 61,204.94, 91,779.70 and 21,763.09

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Solution

The fourth proportional to 61,204.94, 91,779.70 and 21,763.09 is: 32,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,204.94 : 91,779.70 = 21,763.09 : x
  2. Step 2: Convert to fraction form
    61,204.94/91,779.70 = 21,763.09/x
  3. Step 3: Cross multiply
    61,204.94x = 91,779.70 × 21,763.09
  4. Step 4: Simplify right side
    61,204.94x = 1,997,409,871.27
  5. Step 5: Solve for x
    x = 1,997,409,871.27/61,204.94
  6. Step 6: Final answer
    x = 32,634.78

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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.