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Finding the Fourth Proportional to 72,363.44, 99,860.96 and 40,532.64

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Solution

The fourth proportional to 72,363.44, 99,860.96 and 40,532.64 is: 55,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,363.44 : 99,860.96 = 40,532.64 : x
  2. Step 2: Convert to fraction form
    72,363.44/99,860.96 = 40,532.64/x
  3. Step 3: Cross multiply
    72,363.44x = 99,860.96 × 40,532.64
  4. Step 4: Simplify right side
    72,363.44x = 4,047,628,341.73
  5. Step 5: Solve for x
    x = 4,047,628,341.73/72,363.44
  6. Step 6: Final answer
    x = 55,934.71

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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.