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Finding the Fourth Proportional to 68,278.98, 102,418.47 and 21,535.50

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Solution

The fourth proportional to 68,278.98, 102,418.47 and 21,535.50 is: 32,303.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,278.98 : 102,418.47 = 21,535.50 : x
  2. Step 2: Convert to fraction form
    68,278.98/102,418.47 = 21,535.50/x
  3. Step 3: Cross multiply
    68,278.98x = 102,418.47 × 21,535.50
  4. Step 4: Simplify right side
    68,278.98x = 2,205,632,960.69
  5. Step 5: Solve for x
    x = 2,205,632,960.69/68,278.98
  6. Step 6: Final answer
    x = 32,303.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.