Home / 99,540.78-149,305.77-40,360.56

Finding the Fourth Proportional to 99,540.78, 149,305.77 and 40,360.56

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Solution

The fourth proportional to 99,540.78, 149,305.77 and 40,360.56 is: 60,538.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,540.78 : 149,305.77 = 40,360.56 : x
  2. Step 2: Convert to fraction form
    99,540.78/149,305.77 = 40,360.56/x
  3. Step 3: Cross multiply
    99,540.78x = 149,305.77 × 40,360.56
  4. Step 4: Simplify right side
    99,540.78x = 6,026,064,488.43
  5. Step 5: Solve for x
    x = 6,026,064,488.43/99,540.78
  6. Step 6: Final answer
    x = 60,538.65

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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.