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Finding the Fourth Proportional to 50,891.70, 76,301.10 and 21,294.30

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Solution

The fourth proportional to 50,891.70, 76,301.10 and 21,294.30 is: 31,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,891.70 : 76,301.10 = 21,294.30 : x
  2. Step 2: Convert to fraction form
    50,891.70/76,301.10 = 21,294.30/x
  3. Step 3: Cross multiply
    50,891.70x = 76,301.10 × 21,294.30
  4. Step 4: Simplify right side
    50,891.70x = 1,624,778,513.73
  5. Step 5: Solve for x
    x = 1,624,778,513.73/50,891.70
  6. Step 6: Final answer
    x = 31,926.20

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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.