Home / 90,166.55-124,433.50-49,879.61

Finding the Fourth Proportional to 90,166.55, 124,433.50 and 49,879.61

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Solution

The fourth proportional to 90,166.55, 124,433.50 and 49,879.61 is: 68,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,166.55 : 124,433.50 = 49,879.61 : x
  2. Step 2: Convert to fraction form
    90,166.55/124,433.50 = 49,879.61/x
  3. Step 3: Cross multiply
    90,166.55x = 124,433.50 × 49,879.61
  4. Step 4: Simplify right side
    90,166.55x = 6,206,694,917.39
  5. Step 5: Solve for x
    x = 6,206,694,917.39/90,166.55
  6. Step 6: Final answer
    x = 68,835.89

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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.