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Finding the Fourth Proportional to 53,425.80, 80,145.90 and 18,376.20

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Solution

The fourth proportional to 53,425.80, 80,145.90 and 18,376.20 is: 27,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,425.80 : 80,145.90 = 18,376.20 : x
  2. Step 2: Convert to fraction form
    53,425.80/80,145.90 = 18,376.20/x
  3. Step 3: Cross multiply
    53,425.80x = 80,145.90 × 18,376.20
  4. Step 4: Simplify right side
    53,425.80x = 1,472,777,087.58
  5. Step 5: Solve for x
    x = 1,472,777,087.58/53,425.80
  6. Step 6: Final answer
    x = 27,566.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.