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Finding the Fourth Proportional to 50,561.70, 75,864.42 and 20,986.17

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Solution

The fourth proportional to 50,561.70, 75,864.42 and 20,986.17 is: 31,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,561.70 : 75,864.42 = 20,986.17 : x
  2. Step 2: Convert to fraction form
    50,561.70/75,864.42 = 20,986.17/x
  3. Step 3: Cross multiply
    50,561.70x = 75,864.42 × 20,986.17
  4. Step 4: Simplify right side
    50,561.70x = 1,592,103,615.07
  5. Step 5: Solve for x
    x = 1,592,103,615.07/50,561.70
  6. Step 6: Final answer
    x = 31,488.33

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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.