Home / 68,371.02-102,543.84-55,121.40

Finding the Fourth Proportional to 68,371.02, 102,543.84 and 55,121.40

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Solution

The fourth proportional to 68,371.02, 102,543.84 and 55,121.40 is: 82,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,371.02 : 102,543.84 = 55,121.40 : x
  2. Step 2: Convert to fraction form
    68,371.02/102,543.84 = 55,121.40/x
  3. Step 3: Cross multiply
    68,371.02x = 102,543.84 × 55,121.40
  4. Step 4: Simplify right side
    68,371.02x = 5,652,360,022.18
  5. Step 5: Solve for x
    x = 5,652,360,022.18/68,371.02
  6. Step 6: Final answer
    x = 82,671.87

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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.