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Finding the Fourth Proportional to 47,155.46, 65,046.92 and 30,388.46

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Solution

The fourth proportional to 47,155.46, 65,046.92 and 30,388.46 is: 41,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,155.46 : 65,046.92 = 30,388.46 : x
  2. Step 2: Convert to fraction form
    47,155.46/65,046.92 = 30,388.46/x
  3. Step 3: Cross multiply
    47,155.46x = 65,046.92 × 30,388.46
  4. Step 4: Simplify right side
    47,155.46x = 1,976,675,249.37
  5. Step 5: Solve for x
    x = 1,976,675,249.37/47,155.46
  6. Step 6: Final answer
    x = 41,918.27

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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.