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Finding the Fourth Proportional to 45,814.80, 68,773.40 and 42,806.80

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Solution

The fourth proportional to 45,814.80, 68,773.40 and 42,806.80 is: 64,258.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,814.80 : 68,773.40 = 42,806.80 : x
  2. Step 2: Convert to fraction form
    45,814.80/68,773.40 = 42,806.80/x
  3. Step 3: Cross multiply
    45,814.80x = 68,773.40 × 42,806.80
  4. Step 4: Simplify right side
    45,814.80x = 2,943,969,179.12
  5. Step 5: Solve for x
    x = 2,943,969,179.12/45,814.80
  6. Step 6: Final answer
    x = 64,258.04

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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.