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Finding the Fourth Proportional to 71,267.46, 106,893 and 18,681.09

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Solution

The fourth proportional to 71,267.46, 106,893 and 18,681.09 is: 28,019.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,267.46 : 106,893 = 18,681.09 : x
  2. Step 2: Convert to fraction form
    71,267.46/106,893 = 18,681.09/x
  3. Step 3: Cross multiply
    71,267.46x = 106,893 × 18,681.09
  4. Step 4: Simplify right side
    71,267.46x = 1,996,877,753.37
  5. Step 5: Solve for x
    x = 1,996,877,753.37/71,267.46
  6. Step 6: Final answer
    x = 28,019.49

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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.