Home / 90,139.96-124,392.36-49,856.68

Finding the Fourth Proportional to 90,139.96, 124,392.36 and 49,856.68

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Solution

The fourth proportional to 90,139.96, 124,392.36 and 49,856.68 is: 68,801.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,139.96 : 124,392.36 = 49,856.68 : x
  2. Step 2: Convert to fraction form
    90,139.96/124,392.36 = 49,856.68/x
  3. Step 3: Cross multiply
    90,139.96x = 124,392.36 × 49,856.68
  4. Step 4: Simplify right side
    90,139.96x = 6,201,790,086.96
  5. Step 5: Solve for x
    x = 6,201,790,086.96/90,139.96
  6. Step 6: Final answer
    x = 68,801.78

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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.