Home / 73,991.21-102,107.72-39,999.69

Finding the Fourth Proportional to 73,991.21, 102,107.72 and 39,999.69

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Solution

The fourth proportional to 73,991.21, 102,107.72 and 39,999.69 is: 55,199.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,991.21 : 102,107.72 = 39,999.69 : x
  2. Step 2: Convert to fraction form
    73,991.21/102,107.72 = 39,999.69/x
  3. Step 3: Cross multiply
    73,991.21x = 102,107.72 × 39,999.69
  4. Step 4: Simplify right side
    73,991.21x = 4,084,277,246.61
  5. Step 5: Solve for x
    x = 4,084,277,246.61/73,991.21
  6. Step 6: Final answer
    x = 55,199.50

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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.