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Finding the Fourth Proportional to 73,990.73, 102,107.66 and 39,999.15

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Solution

The fourth proportional to 73,990.73, 102,107.66 and 39,999.15 is: 55,199.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,990.73 : 102,107.66 = 39,999.15 : x
  2. Step 2: Convert to fraction form
    73,990.73/102,107.66 = 39,999.15/x
  3. Step 3: Cross multiply
    73,990.73x = 102,107.66 × 39,999.15
  4. Step 4: Simplify right side
    73,990.73x = 4,084,219,408.49
  5. Step 5: Solve for x
    x = 4,084,219,408.49/73,990.73
  6. Step 6: Final answer
    x = 55,199.07

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1.5x scale

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.