Home / 99,336.45-149,009.86-32,781.78

Finding the Fourth Proportional to 99,336.45, 149,009.86 and 32,781.78

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Solution

The fourth proportional to 99,336.45, 149,009.86 and 32,781.78 is: 49,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,336.45 : 149,009.86 = 32,781.78 : x
  2. Step 2: Convert to fraction form
    99,336.45/149,009.86 = 32,781.78/x
  3. Step 3: Cross multiply
    99,336.45x = 149,009.86 × 32,781.78
  4. Step 4: Simplify right side
    99,336.45x = 4,884,808,489.33
  5. Step 5: Solve for x
    x = 4,884,808,489.33/99,336.45
  6. Step 6: Final answer
    x = 49,174.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.