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Finding the Fourth Proportional to 90,251.96, 135,348.66 and 31,073.08

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Solution

The fourth proportional to 90,251.96, 135,348.66 and 31,073.08 is: 46,599.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,251.96 : 135,348.66 = 31,073.08 : x
  2. Step 2: Convert to fraction form
    90,251.96/135,348.66 = 31,073.08/x
  3. Step 3: Cross multiply
    90,251.96x = 135,348.66 × 31,073.08
  4. Step 4: Simplify right side
    90,251.96x = 4,205,699,740.07
  5. Step 5: Solve for x
    x = 4,205,699,740.07/90,251.96
  6. Step 6: Final answer
    x = 46,599.54

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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.