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Finding the Fourth Proportional to 68,398.29, 102,441.60 and 55,899.63

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Solution

The fourth proportional to 68,398.29, 102,441.60 and 55,899.63 is: 83,722.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,398.29 : 102,441.60 = 55,899.63 : x
  2. Step 2: Convert to fraction form
    68,398.29/102,441.60 = 55,899.63/x
  3. Step 3: Cross multiply
    68,398.29x = 102,441.60 × 55,899.63
  4. Step 4: Simplify right side
    68,398.29x = 5,726,447,536.61
  5. Step 5: Solve for x
    x = 5,726,447,536.61/68,398.29
  6. Step 6: Final answer
    x = 83,722.09

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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.