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Finding the Fourth Proportional to 68,732.98, 103,027.47 and 28,774.87

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Solution

The fourth proportional to 68,732.98, 103,027.47 and 28,774.87 is: 43,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,732.98 : 103,027.47 = 28,774.87 : x
  2. Step 2: Convert to fraction form
    68,732.98/103,027.47 = 28,774.87/x
  3. Step 3: Cross multiply
    68,732.98x = 103,027.47 × 28,774.87
  4. Step 4: Simplify right side
    68,732.98x = 2,964,602,055.68
  5. Step 5: Solve for x
    x = 2,964,602,055.68/68,732.98
  6. Step 6: Final answer
    x = 43,132.16

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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.