Home / 90,336.24-135,519.60-31,156.08

Finding the Fourth Proportional to 90,336.24, 135,519.60 and 31,156.08

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Solution

The fourth proportional to 90,336.24, 135,519.60 and 31,156.08 is: 46,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,336.24 : 135,519.60 = 31,156.08 : x
  2. Step 2: Convert to fraction form
    90,336.24/135,519.60 = 31,156.08/x
  3. Step 3: Cross multiply
    90,336.24x = 135,519.60 × 31,156.08
  4. Step 4: Simplify right side
    90,336.24x = 4,222,259,499.17
  5. Step 5: Solve for x
    x = 4,222,259,499.17/90,336.24
  6. Step 6: Final answer
    x = 46,739.38

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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.