Home / 45,708.60-68,562.90-21,132.60

Finding the Fourth Proportional to 45,708.60, 68,562.90 and 21,132.60

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Solution

The fourth proportional to 45,708.60, 68,562.90 and 21,132.60 is: 31,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,708.60 : 68,562.90 = 21,132.60 : x
  2. Step 2: Convert to fraction form
    45,708.60/68,562.90 = 21,132.60/x
  3. Step 3: Cross multiply
    45,708.60x = 68,562.90 × 21,132.60
  4. Step 4: Simplify right side
    45,708.60x = 1,448,912,340.54
  5. Step 5: Solve for x
    x = 1,448,912,340.54/45,708.60
  6. Step 6: Final answer
    x = 31,698.90

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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.