Home / 71,378.09-107,058.85-18,791.67

Finding the Fourth Proportional to 71,378.09, 107,058.85 and 18,791.67

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Solution

The fourth proportional to 71,378.09, 107,058.85 and 18,791.67 is: 28,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378.09 : 107,058.85 = 18,791.67 : x
  2. Step 2: Convert to fraction form
    71,378.09/107,058.85 = 18,791.67/x
  3. Step 3: Cross multiply
    71,378.09x = 107,058.85 × 18,791.67
  4. Step 4: Simplify right side
    71,378.09x = 2,011,814,532.80
  5. Step 5: Solve for x
    x = 2,011,814,532.80/71,378.09
  6. Step 6: Final answer
    x = 28,185.33

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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.