Home / 90,614.08-135,965.67-40,729.42

Finding the Fourth Proportional to 90,614.08, 135,965.67 and 40,729.42

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Solution

The fourth proportional to 90,614.08, 135,965.67 and 40,729.42 is: 61,114.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,614.08 : 135,965.67 = 40,729.42 : x
  2. Step 2: Convert to fraction form
    90,614.08/135,965.67 = 40,729.42/x
  3. Step 3: Cross multiply
    90,614.08x = 135,965.67 × 40,729.42
  4. Step 4: Simplify right side
    90,614.08x = 5,537,802,879.01
  5. Step 5: Solve for x
    x = 5,537,802,879.01/90,614.08
  6. Step 6: Final answer
    x = 61,114.15

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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.