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Finding the Fourth Proportional to 101,441.08, 139,972.62 and 65,632.60

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Solution

The fourth proportional to 101,441.08, 139,972.62 and 65,632.60 is: 90,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,441.08 : 139,972.62 = 65,632.60 : x
  2. Step 2: Convert to fraction form
    101,441.08/139,972.62 = 65,632.60/x
  3. Step 3: Cross multiply
    101,441.08x = 139,972.62 × 65,632.60
  4. Step 4: Simplify right side
    101,441.08x = 9,186,766,979.41
  5. Step 5: Solve for x
    x = 9,186,766,979.41/101,441.08
  6. Step 6: Final answer
    x = 90,562.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.