Home / 68,434.59-102,620.61-21,033.18

Finding the Fourth Proportional to 68,434.59, 102,620.61 and 21,033.18

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Solution

The fourth proportional to 68,434.59, 102,620.61 and 21,033.18 is: 31,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,434.59 : 102,620.61 = 21,033.18 : x
  2. Step 2: Convert to fraction form
    68,434.59/102,620.61 = 21,033.18/x
  3. Step 3: Cross multiply
    68,434.59x = 102,620.61 × 21,033.18
  4. Step 4: Simplify right side
    68,434.59x = 2,158,437,761.84
  5. Step 5: Solve for x
    x = 2,158,437,761.84/68,434.59
  6. Step 6: Final answer
    x = 31,540.16

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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.