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Finding the Fourth Proportional to 75,889.91, 104,757.64 and 67,918.30

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Solution

The fourth proportional to 75,889.91, 104,757.64 and 67,918.30 is: 93,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,889.91 : 104,757.64 = 67,918.30 : x
  2. Step 2: Convert to fraction form
    75,889.91/104,757.64 = 67,918.30/x
  3. Step 3: Cross multiply
    75,889.91x = 104,757.64 × 67,918.30
  4. Step 4: Simplify right side
    75,889.91x = 7,114,960,389.12
  5. Step 5: Solve for x
    x = 7,114,960,389.12/75,889.91
  6. Step 6: Final answer
    x = 93,753.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.