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Finding the Fourth Proportional to 72,503.73, 100,054.71 and 42,286.68

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Solution

The fourth proportional to 72,503.73, 100,054.71 and 42,286.68 is: 58,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,503.73 : 100,054.71 = 42,286.68 : x
  2. Step 2: Convert to fraction form
    72,503.73/100,054.71 = 42,286.68/x
  3. Step 3: Cross multiply
    72,503.73x = 100,054.71 × 42,286.68
  4. Step 4: Simplify right side
    72,503.73x = 4,230,981,504.26
  5. Step 5: Solve for x
    x = 4,230,981,504.26/72,503.73
  6. Step 6: Final answer
    x = 58,355.36

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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.