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Finding the Fourth Proportional to 62,758, 94,148.60 and 20,640.40

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Solution

The fourth proportional to 62,758, 94,148.60 and 20,640.40 is: 30,964.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,758 : 94,148.60 = 20,640.40 : x
  2. Step 2: Convert to fraction form
    62,758/94,148.60 = 20,640.40/x
  3. Step 3: Cross multiply
    62,758x = 94,148.60 × 20,640.40
  4. Step 4: Simplify right side
    62,758x = 1,943,264,763.44
  5. Step 5: Solve for x
    x = 1,943,264,763.44/62,758
  6. Step 6: Final answer
    x = 30,964.42

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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.