Home / 68,279.35-102,419.02-21,535.87

Finding the Fourth Proportional to 68,279.35, 102,419.02 and 21,535.87

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Solution

The fourth proportional to 68,279.35, 102,419.02 and 21,535.87 is: 32,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,279.35 : 102,419.02 = 21,535.87 : x
  2. Step 2: Convert to fraction form
    68,279.35/102,419.02 = 21,535.87/x
  3. Step 3: Cross multiply
    68,279.35x = 102,419.02 × 21,535.87
  4. Step 4: Simplify right side
    68,279.35x = 2,205,682,700.25
  5. Step 5: Solve for x
    x = 2,205,682,700.25/68,279.35
  6. Step 6: Final answer
    x = 32,303.80

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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.