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Finding the Fourth Proportional to 73,287.17, 109,935.11 and 28,308.87

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Solution

The fourth proportional to 73,287.17, 109,935.11 and 28,308.87 is: 42,464.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,287.17 : 109,935.11 = 28,308.87 : x
  2. Step 2: Convert to fraction form
    73,287.17/109,935.11 = 28,308.87/x
  3. Step 3: Cross multiply
    73,287.17x = 109,935.11 × 28,308.87
  4. Step 4: Simplify right side
    73,287.17x = 3,112,138,595.88
  5. Step 5: Solve for x
    x = 3,112,138,595.88/73,287.17
  6. Step 6: Final answer
    x = 42,464.99

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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.