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Finding the Fourth Proportional to 72,566.48, 100,132.67 and 40,296.70

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Solution

The fourth proportional to 72,566.48, 100,132.67 and 40,296.70 is: 55,604.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,566.48 : 100,132.67 = 40,296.70 : x
  2. Step 2: Convert to fraction form
    72,566.48/100,132.67 = 40,296.70/x
  3. Step 3: Cross multiply
    72,566.48x = 100,132.67 × 40,296.70
  4. Step 4: Simplify right side
    72,566.48x = 4,035,016,163.19
  5. Step 5: Solve for x
    x = 4,035,016,163.19/72,566.48
  6. Step 6: Final answer
    x = 55,604.41

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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.