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Finding the Fourth Proportional to 70,229.81, 96,893.39 and 39,993.69

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Solution

The fourth proportional to 70,229.81, 96,893.39 and 39,993.69 is: 55,177.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,229.81 : 96,893.39 = 39,993.69 : x
  2. Step 2: Convert to fraction form
    70,229.81/96,893.39 = 39,993.69/x
  3. Step 3: Cross multiply
    70,229.81x = 96,893.39 × 39,993.69
  4. Step 4: Simplify right side
    70,229.81x = 3,875,124,002.74
  5. Step 5: Solve for x
    x = 3,875,124,002.74/70,229.81
  6. Step 6: Final answer
    x = 55,177.77

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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.