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Finding the Fourth Proportional to 57,747.80, 86,548.80 and 28,101.80

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Solution

The fourth proportional to 57,747.80, 86,548.80 and 28,101.80 is: 42,117.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,747.80 : 86,548.80 = 28,101.80 : x
  2. Step 2: Convert to fraction form
    57,747.80/86,548.80 = 28,101.80/x
  3. Step 3: Cross multiply
    57,747.80x = 86,548.80 × 28,101.80
  4. Step 4: Simplify right side
    57,747.80x = 2,432,177,067.84
  5. Step 5: Solve for x
    x = 2,432,177,067.84/57,747.80
  6. Step 6: Final answer
    x = 42,117.22

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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.