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Finding the Fourth Proportional to 68,818.31, 103,227.41 and 18,898.62

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Solution

The fourth proportional to 68,818.31, 103,227.41 and 18,898.62 is: 28,347.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,818.31 : 103,227.41 = 18,898.62 : x
  2. Step 2: Convert to fraction form
    68,818.31/103,227.41 = 18,898.62/x
  3. Step 3: Cross multiply
    68,818.31x = 103,227.41 × 18,898.62
  4. Step 4: Simplify right side
    68,818.31x = 1,950,855,255.32
  5. Step 5: Solve for x
    x = 1,950,855,255.32/68,818.31
  6. Step 6: Final answer
    x = 28,347.91

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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.