Home / 65,139.29-97,716.02-20,755.61

Finding the Fourth Proportional to 65,139.29, 97,716.02 and 20,755.61

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Solution

The fourth proportional to 65,139.29, 97,716.02 and 20,755.61 is: 31,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.29 : 97,716.02 = 20,755.61 : x
  2. Step 2: Convert to fraction form
    65,139.29/97,716.02 = 20,755.61/x
  3. Step 3: Cross multiply
    65,139.29x = 97,716.02 × 20,755.61
  4. Step 4: Simplify right side
    65,139.29x = 2,028,155,498.09
  5. Step 5: Solve for x
    x = 2,028,155,498.09/65,139.29
  6. Step 6: Final answer
    x = 31,135.67

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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.