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Finding the Fourth Proportional to 50,657.40, 75,979.22 and 13,220.42

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Solution

The fourth proportional to 50,657.40, 75,979.22 and 13,220.42 is: 19,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,657.40 : 75,979.22 = 13,220.42 : x
  2. Step 2: Convert to fraction form
    50,657.40/75,979.22 = 13,220.42/x
  3. Step 3: Cross multiply
    50,657.40x = 75,979.22 × 13,220.42
  4. Step 4: Simplify right side
    50,657.40x = 1,004,476,753.67
  5. Step 5: Solve for x
    x = 1,004,476,753.67/50,657.40
  6. Step 6: Final answer
    x = 19,828.83

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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.