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Finding the Fourth Proportional to 71,486.01, 107,229.42 and 18,894.94

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Solution

The fourth proportional to 71,486.01, 107,229.42 and 18,894.94 is: 28,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,486.01 : 107,229.42 = 18,894.94 : x
  2. Step 2: Convert to fraction form
    71,486.01/107,229.42 = 18,894.94/x
  3. Step 3: Cross multiply
    71,486.01x = 107,229.42 × 18,894.94
  4. Step 4: Simplify right side
    71,486.01x = 2,026,093,189.06
  5. Step 5: Solve for x
    x = 2,026,093,189.06/71,486.01
  6. Step 6: Final answer
    x = 28,342.51

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1.5x scale

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.