Home / 90,458.24-135,664.32-28,096.64

Finding the Fourth Proportional to 90,458.24, 135,664.32 and 28,096.64

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Solution

The fourth proportional to 90,458.24, 135,664.32 and 28,096.64 is: 42,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,458.24 : 135,664.32 = 28,096.64 : x
  2. Step 2: Convert to fraction form
    90,458.24/135,664.32 = 28,096.64/x
  3. Step 3: Cross multiply
    90,458.24x = 135,664.32 × 28,096.64
  4. Step 4: Simplify right side
    90,458.24x = 3,811,711,559.88
  5. Step 5: Solve for x
    x = 3,811,711,559.88/90,458.24
  6. Step 6: Final answer
    x = 42,137.80

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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.