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Finding the Fourth Proportional to 73,436, 101,341.96 and 39,902

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Solution

The fourth proportional to 73,436, 101,341.96 and 39,902 is: 55,064.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,436 : 101,341.96 = 39,902 : x
  2. Step 2: Convert to fraction form
    73,436/101,341.96 = 39,902/x
  3. Step 3: Cross multiply
    73,436x = 101,341.96 × 39,902
  4. Step 4: Simplify right side
    73,436x = 4,043,746,887.92
  5. Step 5: Solve for x
    x = 4,043,746,887.92/73,436
  6. Step 6: Final answer
    x = 55,064.91

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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.