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Finding the Fourth Proportional to 68,697.29, 103,047.35 and 45,154.94

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Solution

The fourth proportional to 68,697.29, 103,047.35 and 45,154.94 is: 67,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,697.29 : 103,047.35 = 45,154.94 : x
  2. Step 2: Convert to fraction form
    68,697.29/103,047.35 = 45,154.94/x
  3. Step 3: Cross multiply
    68,697.29x = 103,047.35 × 45,154.94
  4. Step 4: Simplify right side
    68,697.29x = 4,653,096,906.41
  5. Step 5: Solve for x
    x = 4,653,096,906.41/68,697.29
  6. Step 6: Final answer
    x = 67,733.34

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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.