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Finding the Fourth Proportional to 70,950, 106,425.04 and 21,702

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Solution

The fourth proportional to 70,950, 106,425.04 and 21,702 is: 32,553.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,950 : 106,425.04 = 21,702 : x
  2. Step 2: Convert to fraction form
    70,950/106,425.04 = 21,702/x
  3. Step 3: Cross multiply
    70,950x = 106,425.04 × 21,702
  4. Step 4: Simplify right side
    70,950x = 2,309,636,218.08
  5. Step 5: Solve for x
    x = 2,309,636,218.08/70,950
  6. Step 6: Final answer
    x = 32,553.01

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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.