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Finding the Fourth Proportional to 68,360.80, 102,554.88 and 28,917.76

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Solution

The fourth proportional to 68,360.80, 102,554.88 and 28,917.76 is: 43,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,360.80 : 102,554.88 = 28,917.76 : x
  2. Step 2: Convert to fraction form
    68,360.80/102,554.88 = 28,917.76/x
  3. Step 3: Cross multiply
    68,360.80x = 102,554.88 × 28,917.76
  4. Step 4: Simplify right side
    68,360.80x = 2,965,657,406.67
  5. Step 5: Solve for x
    x = 2,965,657,406.67/68,360.80
  6. Step 6: Final answer
    x = 43,382.43

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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.