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Finding the Fourth Proportional to 73,907, 101,992.30 and 40,373

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Solution

The fourth proportional to 73,907, 101,992.30 and 40,373 is: 55,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,907 : 101,992.30 = 40,373 : x
  2. Step 2: Convert to fraction form
    73,907/101,992.30 = 40,373/x
  3. Step 3: Cross multiply
    73,907x = 101,992.30 × 40,373
  4. Step 4: Simplify right side
    73,907x = 4,117,735,127.90
  5. Step 5: Solve for x
    x = 4,117,735,127.90/73,907
  6. Step 6: Final answer
    x = 55,715.09

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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.