Home / 65,139.54-97,716.39-20,755.86

Finding the Fourth Proportional to 65,139.54, 97,716.39 and 20,755.86

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Solution

The fourth proportional to 65,139.54, 97,716.39 and 20,755.86 is: 31,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.54 : 97,716.39 = 20,755.86 : x
  2. Step 2: Convert to fraction form
    65,139.54/97,716.39 = 20,755.86/x
  3. Step 3: Cross multiply
    65,139.54x = 97,716.39 × 20,755.86
  4. Step 4: Simplify right side
    65,139.54x = 2,028,187,710.55
  5. Step 5: Solve for x
    x = 2,028,187,710.55/65,139.54
  6. Step 6: Final answer
    x = 31,136.05

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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.