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Finding the Fourth Proportional to 71,285.98, 106,929.03 and 21,371.32

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Solution

The fourth proportional to 71,285.98, 106,929.03 and 21,371.32 is: 32,057.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,285.98 : 106,929.03 = 21,371.32 : x
  2. Step 2: Convert to fraction form
    71,285.98/106,929.03 = 21,371.32/x
  3. Step 3: Cross multiply
    71,285.98x = 106,929.03 × 21,371.32
  4. Step 4: Simplify right side
    71,285.98x = 2,285,214,517.42
  5. Step 5: Solve for x
    x = 2,285,214,517.42/71,285.98
  6. Step 6: Final answer
    x = 32,057.00

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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.