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Finding the Fourth Proportional to 68,306.81, 102,435.62 and 28,867.01

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Solution

The fourth proportional to 68,306.81, 102,435.62 and 28,867.01 is: 43,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,306.81 : 102,435.62 = 28,867.01 : x
  2. Step 2: Convert to fraction form
    68,306.81/102,435.62 = 28,867.01/x
  3. Step 3: Cross multiply
    68,306.81x = 102,435.62 × 28,867.01
  4. Step 4: Simplify right side
    68,306.81x = 2,957,009,410.38
  5. Step 5: Solve for x
    x = 2,957,009,410.38/68,306.81
  6. Step 6: Final answer
    x = 43,290.11

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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.