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Finding the Fourth Proportional to 73,863, 101,931.21 and 40,329

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Solution

The fourth proportional to 73,863, 101,931.21 and 40,329 is: 55,654.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,863 : 101,931.21 = 40,329 : x
  2. Step 2: Convert to fraction form
    73,863/101,931.21 = 40,329/x
  3. Step 3: Cross multiply
    73,863x = 101,931.21 × 40,329
  4. Step 4: Simplify right side
    73,863x = 4,110,783,768.09
  5. Step 5: Solve for x
    x = 4,110,783,768.09/73,863
  6. Step 6: Final answer
    x = 55,654.17

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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.