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Finding the Fourth Proportional to 68,803.04, 103,204.48 and 45,424

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Solution

The fourth proportional to 68,803.04, 103,204.48 and 45,424 is: 68,135.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,803.04 : 103,204.48 = 45,424 : x
  2. Step 2: Convert to fraction form
    68,803.04/103,204.48 = 45,424/x
  3. Step 3: Cross multiply
    68,803.04x = 103,204.48 × 45,424
  4. Step 4: Simplify right side
    68,803.04x = 4,687,960,299.52
  5. Step 5: Solve for x
    x = 4,687,960,299.52/68,803.04
  6. Step 6: Final answer
    x = 68,135.95

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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.