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Finding the Fourth Proportional to 50,991.36, 70,375.68 and 40,211.52

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Solution

The fourth proportional to 50,991.36, 70,375.68 and 40,211.52 is: 55,497.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,991.36 : 70,375.68 = 40,211.52 : x
  2. Step 2: Convert to fraction form
    50,991.36/70,375.68 = 40,211.52/x
  3. Step 3: Cross multiply
    50,991.36x = 70,375.68 × 40,211.52
  4. Step 4: Simplify right side
    50,991.36x = 2,829,913,063.83
  5. Step 5: Solve for x
    x = 2,829,913,063.83/50,991.36
  6. Step 6: Final answer
    x = 55,497.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.