Home / 90,022.32-124,228.62-49,739.94

Finding the Fourth Proportional to 90,022.32, 124,228.62 and 49,739.94

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Solution

The fourth proportional to 90,022.32, 124,228.62 and 49,739.94 is: 68,639.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,022.32 : 124,228.62 = 49,739.94 : x
  2. Step 2: Convert to fraction form
    90,022.32/124,228.62 = 49,739.94/x
  3. Step 3: Cross multiply
    90,022.32x = 124,228.62 × 49,739.94
  4. Step 4: Simplify right side
    90,022.32x = 6,179,124,105.08
  5. Step 5: Solve for x
    x = 6,179,124,105.08/90,022.32
  6. Step 6: Final answer
    x = 68,639.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.