Home / 65,418.30-98,118.09-21,039.18

Finding the Fourth Proportional to 65,418.30, 98,118.09 and 21,039.18

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Solution

The fourth proportional to 65,418.30, 98,118.09 and 21,039.18 is: 31,555.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,418.30 : 98,118.09 = 21,039.18 : x
  2. Step 2: Convert to fraction form
    65,418.30/98,118.09 = 21,039.18/x
  3. Step 3: Cross multiply
    65,418.30x = 98,118.09 × 21,039.18
  4. Step 4: Simplify right side
    65,418.30x = 2,064,324,156.77
  5. Step 5: Solve for x
    x = 2,064,324,156.77/65,418.30
  6. Step 6: Final answer
    x = 31,555.76

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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.