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Finding the Fourth Proportional to 73,318.50, 101,179.80 and 39,784.50

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Solution

The fourth proportional to 73,318.50, 101,179.80 and 39,784.50 is: 54,902.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,318.50 : 101,179.80 = 39,784.50 : x
  2. Step 2: Convert to fraction form
    73,318.50/101,179.80 = 39,784.50/x
  3. Step 3: Cross multiply
    73,318.50x = 101,179.80 × 39,784.50
  4. Step 4: Simplify right side
    73,318.50x = 4,025,387,753.10
  5. Step 5: Solve for x
    x = 4,025,387,753.10/73,318.50
  6. Step 6: Final answer
    x = 54,902.76

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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.