Home / 90,781.43-125,285.94-50,502.78

Finding the Fourth Proportional to 90,781.43, 125,285.94 and 50,502.78

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Solution

The fourth proportional to 90,781.43, 125,285.94 and 50,502.78 is: 69,698.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,781.43 : 125,285.94 = 50,502.78 : x
  2. Step 2: Convert to fraction form
    90,781.43/125,285.94 = 50,502.78/x
  3. Step 3: Cross multiply
    90,781.43x = 125,285.94 × 50,502.78
  4. Step 4: Simplify right side
    90,781.43x = 6,327,288,264.91
  5. Step 5: Solve for x
    x = 6,327,288,264.91/90,781.43
  6. Step 6: Final answer
    x = 69,698.05

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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.