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Finding the Fourth Proportional to 61,183.70, 91,775.55 and 42,521.30

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Solution

The fourth proportional to 61,183.70, 91,775.55 and 42,521.30 is: 63,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,183.70 : 91,775.55 = 42,521.30 : x
  2. Step 2: Convert to fraction form
    61,183.70/91,775.55 = 42,521.30/x
  3. Step 3: Cross multiply
    61,183.70x = 91,775.55 × 42,521.30
  4. Step 4: Simplify right side
    61,183.70x = 3,902,415,694.22
  5. Step 5: Solve for x
    x = 3,902,415,694.22/61,183.70
  6. Step 6: Final answer
    x = 63,781.95

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Similar ratio
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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.