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Finding the Fourth Proportional to 45,813.80, 68,742.30 and 34,149.80

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Solution

The fourth proportional to 45,813.80, 68,742.30 and 34,149.80 is: 51,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,813.80 : 68,742.30 = 34,149.80 : x
  2. Step 2: Convert to fraction form
    45,813.80/68,742.30 = 34,149.80/x
  3. Step 3: Cross multiply
    45,813.80x = 68,742.30 × 34,149.80
  4. Step 4: Simplify right side
    45,813.80x = 2,347,535,796.54
  5. Step 5: Solve for x
    x = 2,347,535,796.54/45,813.80
  6. Step 6: Final answer
    x = 51,240.80

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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.