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Finding the Fourth Proportional to 90,597.78, 135,876 and 34,444.13

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Solution

The fourth proportional to 90,597.78, 135,876 and 34,444.13 is: 51,658.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,597.78 : 135,876 = 34,444.13 : x
  2. Step 2: Convert to fraction form
    90,597.78/135,876 = 34,444.13/x
  3. Step 3: Cross multiply
    90,597.78x = 135,876 × 34,444.13
  4. Step 4: Simplify right side
    90,597.78x = 4,680,129,928.50
  5. Step 5: Solve for x
    x = 4,680,129,928.50/90,597.78
  6. Step 6: Final answer
    x = 51,658.33

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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.