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Finding the Fourth Proportional to 57,391, 86,221.74 and 33,759.08

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Solution

The fourth proportional to 57,391, 86,221.74 and 33,759.08 is: 50,718.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,391 : 86,221.74 = 33,759.08 : x
  2. Step 2: Convert to fraction form
    57,391/86,221.74 = 33,759.08/x
  3. Step 3: Cross multiply
    57,391x = 86,221.74 × 33,759.08
  4. Step 4: Simplify right side
    57,391x = 2,910,766,618.40
  5. Step 5: Solve for x
    x = 2,910,766,618.40/57,391
  6. Step 6: Final answer
    x = 50,718.17

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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.