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Finding the Fourth Proportional to 50,891.80, 70,231.08 and 27,921.47

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Solution

The fourth proportional to 50,891.80, 70,231.08 and 27,921.47 is: 38,531.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,891.80 : 70,231.08 = 27,921.47 : x
  2. Step 2: Convert to fraction form
    50,891.80/70,231.08 = 27,921.47/x
  3. Step 3: Cross multiply
    50,891.80x = 70,231.08 × 27,921.47
  4. Step 4: Simplify right side
    50,891.80x = 1,960,955,028.72
  5. Step 5: Solve for x
    x = 1,960,955,028.72/50,891.80
  6. Step 6: Final answer
    x = 38,531.84

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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.