Home / 90,647.82-135,925.03-40,685.08

Finding the Fourth Proportional to 90,647.82, 135,925.03 and 40,685.08

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Solution

The fourth proportional to 90,647.82, 135,925.03 and 40,685.08 is: 61,006.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,647.82 : 135,925.03 = 40,685.08 : x
  2. Step 2: Convert to fraction form
    90,647.82/135,925.03 = 40,685.08/x
  3. Step 3: Cross multiply
    90,647.82x = 135,925.03 × 40,685.08
  4. Step 4: Simplify right side
    90,647.82x = 5,530,120,719.55
  5. Step 5: Solve for x
    x = 5,530,120,719.55/90,647.82
  6. Step 6: Final answer
    x = 61,006.66

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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.