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Finding the Fourth Proportional to 89,091.90, 122,958.99 and 54,630.54

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Solution

The fourth proportional to 89,091.90, 122,958.99 and 54,630.54 is: 75,397.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,091.90 : 122,958.99 = 54,630.54 : x
  2. Step 2: Convert to fraction form
    89,091.90/122,958.99 = 54,630.54/x
  3. Step 3: Cross multiply
    89,091.90x = 122,958.99 × 54,630.54
  4. Step 4: Simplify right side
    89,091.90x = 6,717,316,021.55
  5. Step 5: Solve for x
    x = 6,717,316,021.55/89,091.90
  6. Step 6: Final answer
    x = 75,397.61

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1.5x scale

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.