Home / 65,665.60-98,505.24-21,290.56

Finding the Fourth Proportional to 65,665.60, 98,505.24 and 21,290.56

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Solution

The fourth proportional to 65,665.60, 98,505.24 and 21,290.56 is: 31,938.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,665.60 : 98,505.24 = 21,290.56 : x
  2. Step 2: Convert to fraction form
    65,665.60/98,505.24 = 21,290.56/x
  3. Step 3: Cross multiply
    65,665.60x = 98,505.24 × 21,290.56
  4. Step 4: Simplify right side
    65,665.60x = 2,097,231,722.53
  5. Step 5: Solve for x
    x = 2,097,231,722.53/65,665.60
  6. Step 6: Final answer
    x = 31,938.06

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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.