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Finding the Fourth Proportional to 71,446.86, 107,170.34 and 21,526.97

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Solution

The fourth proportional to 71,446.86, 107,170.34 and 21,526.97 is: 32,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,446.86 : 107,170.34 = 21,526.97 : x
  2. Step 2: Convert to fraction form
    71,446.86/107,170.34 = 21,526.97/x
  3. Step 3: Cross multiply
    71,446.86x = 107,170.34 × 21,526.97
  4. Step 4: Simplify right side
    71,446.86x = 2,307,052,050.58
  5. Step 5: Solve for x
    x = 2,307,052,050.58/71,446.86
  6. Step 6: Final answer
    x = 32,290.46

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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.