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Finding the Fourth Proportional to 50,369.78, 75,526.92 and 20,780.88

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Solution

The fourth proportional to 50,369.78, 75,526.92 and 20,780.88 is: 31,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,369.78 : 75,526.92 = 20,780.88 : x
  2. Step 2: Convert to fraction form
    50,369.78/75,526.92 = 20,780.88/x
  3. Step 3: Cross multiply
    50,369.78x = 75,526.92 × 20,780.88
  4. Step 4: Simplify right side
    50,369.78x = 1,569,515,861.29
  5. Step 5: Solve for x
    x = 1,569,515,861.29/50,369.78
  6. Step 6: Final answer
    x = 31,159.87

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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.