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Finding the Fourth Proportional to 89,998.77, 135,023.19 and 39,388.77

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Solution

The fourth proportional to 89,998.77, 135,023.19 and 39,388.77 is: 59,094.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,998.77 : 135,023.19 = 39,388.77 : x
  2. Step 2: Convert to fraction form
    89,998.77/135,023.19 = 39,388.77/x
  3. Step 3: Cross multiply
    89,998.77x = 135,023.19 × 39,388.77
  4. Step 4: Simplify right side
    89,998.77x = 5,318,397,375.58
  5. Step 5: Solve for x
    x = 5,318,397,375.58/89,998.77
  6. Step 6: Final answer
    x = 59,094.11

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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.