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Finding the Fourth Proportional to 45,772.80, 68,629.60 and 19,470.40

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Solution

The fourth proportional to 45,772.80, 68,629.60 and 19,470.40 is: 29,193.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,772.80 : 68,629.60 = 19,470.40 : x
  2. Step 2: Convert to fraction form
    45,772.80/68,629.60 = 19,470.40/x
  3. Step 3: Cross multiply
    45,772.80x = 68,629.60 × 19,470.40
  4. Step 4: Simplify right side
    45,772.80x = 1,336,245,763.84
  5. Step 5: Solve for x
    x = 1,336,245,763.84/45,772.80
  6. Step 6: Final answer
    x = 29,193.01

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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.