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Finding the Fourth Proportional to 45,870.80, 68,773.80 and 20,922.80

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Solution

The fourth proportional to 45,870.80, 68,773.80 and 20,922.80 is: 31,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,870.80 : 68,773.80 = 20,922.80 : x
  2. Step 2: Convert to fraction form
    45,870.80/68,773.80 = 20,922.80/x
  3. Step 3: Cross multiply
    45,870.80x = 68,773.80 × 20,922.80
  4. Step 4: Simplify right side
    45,870.80x = 1,438,940,462.64
  5. Step 5: Solve for x
    x = 1,438,940,462.64/45,870.80
  6. Step 6: Final answer
    x = 31,369.42

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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.