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Finding the Fourth Proportional to 73,908.57, 101,993.82 and 39,917.05

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Solution

The fourth proportional to 73,908.57, 101,993.82 and 39,917.05 is: 55,085.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,908.57 : 101,993.82 = 39,917.05 : x
  2. Step 2: Convert to fraction form
    73,908.57/101,993.82 = 39,917.05/x
  3. Step 3: Cross multiply
    73,908.57x = 101,993.82 × 39,917.05
  4. Step 4: Simplify right side
    73,908.57x = 4,071,292,581.67
  5. Step 5: Solve for x
    x = 4,071,292,581.67/73,908.57
  6. Step 6: Final answer
    x = 55,085.53

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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.