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Finding the Fourth Proportional to 71,590.98, 107,378.13 and 19,004.55

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Solution

The fourth proportional to 71,590.98, 107,378.13 and 19,004.55 is: 28,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,590.98 : 107,378.13 = 19,004.55 : x
  2. Step 2: Convert to fraction form
    71,590.98/107,378.13 = 19,004.55/x
  3. Step 3: Cross multiply
    71,590.98x = 107,378.13 × 19,004.55
  4. Step 4: Simplify right side
    71,590.98x = 2,040,673,040.49
  5. Step 5: Solve for x
    x = 2,040,673,040.49/71,590.98
  6. Step 6: Final answer
    x = 28,504.61

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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.