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Finding the Fourth Proportional to 61,843.20, 85,404.24 and 42,771.84

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Solution

The fourth proportional to 61,843.20, 85,404.24 and 42,771.84 is: 59,067.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,843.20 : 85,404.24 = 42,771.84 : x
  2. Step 2: Convert to fraction form
    61,843.20/85,404.24 = 42,771.84/x
  3. Step 3: Cross multiply
    61,843.20x = 85,404.24 × 42,771.84
  4. Step 4: Simplify right side
    61,843.20x = 3,652,896,488.60
  5. Step 5: Solve for x
    x = 3,652,896,488.60/61,843.20
  6. Step 6: Final answer
    x = 59,067.07

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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.