Home / 68,025.60-102,045.12-21,279.36

Finding the Fourth Proportional to 68,025.60, 102,045.12 and 21,279.36

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Solution

The fourth proportional to 68,025.60, 102,045.12 and 21,279.36 is: 31,921.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,025.60 : 102,045.12 = 21,279.36 : x
  2. Step 2: Convert to fraction form
    68,025.60/102,045.12 = 21,279.36/x
  3. Step 3: Cross multiply
    68,025.60x = 102,045.12 × 21,279.36
  4. Step 4: Simplify right side
    68,025.60x = 2,171,454,844.72
  5. Step 5: Solve for x
    x = 2,171,454,844.72/68,025.60
  6. Step 6: Final answer
    x = 31,921.14

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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.