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Finding the Fourth Proportional to 50,979.84, 76,486.02 and 21,389.73

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Solution

The fourth proportional to 50,979.84, 76,486.02 and 21,389.73 is: 32,091.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,979.84 : 76,486.02 = 21,389.73 : x
  2. Step 2: Convert to fraction form
    50,979.84/76,486.02 = 21,389.73/x
  3. Step 3: Cross multiply
    50,979.84x = 76,486.02 × 21,389.73
  4. Step 4: Simplify right side
    50,979.84x = 1,636,015,316.57
  5. Step 5: Solve for x
    x = 1,636,015,316.57/50,979.84
  6. Step 6: Final answer
    x = 32,091.42

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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.