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Finding the Fourth Proportional to 71,872.70, 107,809.07 and 21,950.11

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Solution

The fourth proportional to 71,872.70, 107,809.07 and 21,950.11 is: 32,925.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,872.70 : 107,809.07 = 21,950.11 : x
  2. Step 2: Convert to fraction form
    71,872.70/107,809.07 = 21,950.11/x
  3. Step 3: Cross multiply
    71,872.70x = 107,809.07 × 21,950.11
  4. Step 4: Simplify right side
    71,872.70x = 2,366,420,296.70
  5. Step 5: Solve for x
    x = 2,366,420,296.70/71,872.70
  6. Step 6: Final answer
    x = 32,925.16

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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.