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Finding the Fourth Proportional to 68,303.79, 102,489.71 and 38,299.37

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Solution

The fourth proportional to 68,303.79, 102,489.71 and 38,299.37 is: 57,468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,303.79 : 102,489.71 = 38,299.37 : x
  2. Step 2: Convert to fraction form
    68,303.79/102,489.71 = 38,299.37/x
  3. Step 3: Cross multiply
    68,303.79x = 102,489.71 × 38,299.37
  4. Step 4: Simplify right side
    68,303.79x = 3,925,290,620.54
  5. Step 5: Solve for x
    x = 3,925,290,620.54/68,303.79
  6. Step 6: Final answer
    x = 57,468.12

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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.