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Finding the Fourth Proportional to 71,590.89, 107,378.13 and 19,004.49

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Solution

The fourth proportional to 71,590.89, 107,378.13 and 19,004.49 is: 28,504.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,590.89 : 107,378.13 = 19,004.49 : x
  2. Step 2: Convert to fraction form
    71,590.89/107,378.13 = 19,004.49/x
  3. Step 3: Cross multiply
    71,590.89x = 107,378.13 × 19,004.49
  4. Step 4: Simplify right side
    71,590.89x = 2,040,666,597.80
  5. Step 5: Solve for x
    x = 2,040,666,597.80/71,590.89
  6. Step 6: Final answer
    x = 28,504.56

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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.