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Finding the Fourth Proportional to 72,797.76, 100,452.66 and 40,965.84

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Solution

The fourth proportional to 72,797.76, 100,452.66 and 40,965.84 is: 56,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,797.76 : 100,452.66 = 40,965.84 : x
  2. Step 2: Convert to fraction form
    72,797.76/100,452.66 = 40,965.84/x
  3. Step 3: Cross multiply
    72,797.76x = 100,452.66 × 40,965.84
  4. Step 4: Simplify right side
    72,797.76x = 4,115,127,597.13
  5. Step 5: Solve for x
    x = 4,115,127,597.13/72,797.76
  6. Step 6: Final answer
    x = 56,528.22

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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.