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Finding the Fourth Proportional to 72,933.39, 100,648.14 and 39,399.39

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Solution

The fourth proportional to 72,933.39, 100,648.14 and 39,399.39 is: 54,371.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,933.39 : 100,648.14 = 39,399.39 : x
  2. Step 2: Convert to fraction form
    72,933.39/100,648.14 = 39,399.39/x
  3. Step 3: Cross multiply
    72,933.39x = 100,648.14 × 39,399.39
  4. Step 4: Simplify right side
    72,933.39x = 3,965,475,320.63
  5. Step 5: Solve for x
    x = 3,965,475,320.63/72,933.39
  6. Step 6: Final answer
    x = 54,371.19

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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.