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Finding the Fourth Proportional to 61,501.38, 92,190.39 and 21,489.30

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Solution

The fourth proportional to 61,501.38, 92,190.39 and 21,489.30 is: 32,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,501.38 : 92,190.39 = 21,489.30 : x
  2. Step 2: Convert to fraction form
    61,501.38/92,190.39 = 21,489.30/x
  3. Step 3: Cross multiply
    61,501.38x = 92,190.39 × 21,489.30
  4. Step 4: Simplify right side
    61,501.38x = 1,981,106,947.83
  5. Step 5: Solve for x
    x = 1,981,106,947.83/61,501.38
  6. Step 6: Final answer
    x = 32,212.40

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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.