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Finding the Fourth Proportional to 53,371.89, 79,988.37 and 21,744.90

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Solution

The fourth proportional to 53,371.89, 79,988.37 and 21,744.90 is: 32,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,371.89 : 79,988.37 = 21,744.90 : x
  2. Step 2: Convert to fraction form
    53,371.89/79,988.37 = 21,744.90/x
  3. Step 3: Cross multiply
    53,371.89x = 79,988.37 × 21,744.90
  4. Step 4: Simplify right side
    53,371.89x = 1,739,339,025.27
  5. Step 5: Solve for x
    x = 1,739,339,025.27/53,371.89
  6. Step 6: Final answer
    x = 32,589.05

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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.