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Finding the Fourth Proportional to 71,344.45, 107,016.68 and 21,424.96

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Solution

The fourth proportional to 71,344.45, 107,016.68 and 21,424.96 is: 32,137.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,344.45 : 107,016.68 = 21,424.96 : x
  2. Step 2: Convert to fraction form
    71,344.45/107,016.68 = 21,424.96/x
  3. Step 3: Cross multiply
    71,344.45x = 107,016.68 × 21,424.96
  4. Step 4: Simplify right side
    71,344.45x = 2,292,828,088.33
  5. Step 5: Solve for x
    x = 2,292,828,088.33/71,344.45
  6. Step 6: Final answer
    x = 32,137.44

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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.