Home / 65,610.09-98,418.21-21,240.33

Finding the Fourth Proportional to 65,610.09, 98,418.21 and 21,240.33

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Solution

The fourth proportional to 65,610.09, 98,418.21 and 21,240.33 is: 31,861.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,610.09 : 98,418.21 = 21,240.33 : x
  2. Step 2: Convert to fraction form
    65,610.09/98,418.21 = 21,240.33/x
  3. Step 3: Cross multiply
    65,610.09x = 98,418.21 × 21,240.33
  4. Step 4: Simplify right side
    65,610.09x = 2,090,435,258.41
  5. Step 5: Solve for x
    x = 2,090,435,258.41/65,610.09
  6. Step 6: Final answer
    x = 31,861.49

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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.