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Finding the Fourth Proportional to 53,351.80, 73,631.19 and 30,691.78

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Solution

The fourth proportional to 53,351.80, 73,631.19 and 30,691.78 is: 42,357.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,351.80 : 73,631.19 = 30,691.78 : x
  2. Step 2: Convert to fraction form
    53,351.80/73,631.19 = 30,691.78/x
  3. Step 3: Cross multiply
    53,351.80x = 73,631.19 × 30,691.78
  4. Step 4: Simplify right side
    53,351.80x = 2,259,872,284.62
  5. Step 5: Solve for x
    x = 2,259,872,284.62/53,351.80
  6. Step 6: Final answer
    x = 42,357.94

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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.