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Finding the Fourth Proportional to 89,998.66, 135,001.62 and 30,840.31

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Solution

The fourth proportional to 89,998.66, 135,001.62 and 30,840.31 is: 46,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,998.66 : 135,001.62 = 30,840.31 : x
  2. Step 2: Convert to fraction form
    89,998.66/135,001.62 = 30,840.31/x
  3. Step 3: Cross multiply
    89,998.66x = 135,001.62 × 30,840.31
  4. Step 4: Simplify right side
    89,998.66x = 4,163,491,811.30
  5. Step 5: Solve for x
    x = 4,163,491,811.30/89,998.66
  6. Step 6: Final answer
    x = 46,261.71

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1.5x scale

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.