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Finding the Fourth Proportional to 68,632.70, 102,978.63 and 26,542.40

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Solution

The fourth proportional to 68,632.70, 102,978.63 and 26,542.40 is: 39,825.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,632.70 : 102,978.63 = 26,542.40 : x
  2. Step 2: Convert to fraction form
    68,632.70/102,978.63 = 26,542.40/x
  3. Step 3: Cross multiply
    68,632.70x = 102,978.63 × 26,542.40
  4. Step 4: Simplify right side
    68,632.70x = 2,733,299,474.02
  5. Step 5: Solve for x
    x = 2,733,299,474.02/68,632.70
  6. Step 6: Final answer
    x = 39,825.03

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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.