Home / 90,829.92-136,236.24-28,489.44

Finding the Fourth Proportional to 90,829.92, 136,236.24 and 28,489.44

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Solution

The fourth proportional to 90,829.92, 136,236.24 and 28,489.44 is: 42,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,829.92 : 136,236.24 = 28,489.44 : x
  2. Step 2: Convert to fraction form
    90,829.92/136,236.24 = 28,489.44/x
  3. Step 3: Cross multiply
    90,829.92x = 136,236.24 × 28,489.44
  4. Step 4: Simplify right side
    90,829.92x = 3,881,294,185.31
  5. Step 5: Solve for x
    x = 3,881,294,185.31/90,829.92
  6. Step 6: Final answer
    x = 42,731.45

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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.