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Finding the Fourth Proportional to 73,317, 101,178 and 39,783

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Solution

The fourth proportional to 73,317, 101,178 and 39,783 is: 54,900.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,317 : 101,178 = 39,783 : x
  2. Step 2: Convert to fraction form
    73,317/101,178 = 39,783/x
  3. Step 3: Cross multiply
    73,317x = 101,178 × 39,783
  4. Step 4: Simplify right side
    73,317x = 4,025,164,374
  5. Step 5: Solve for x
    x = 4,025,164,374/73,317
  6. Step 6: Final answer
    x = 54,900.83

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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.