Home / 90,206.40-124,481.76-49,921.86

Finding the Fourth Proportional to 90,206.40, 124,481.76 and 49,921.86

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Solution

The fourth proportional to 90,206.40, 124,481.76 and 49,921.86 is: 68,890.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,206.40 : 124,481.76 = 49,921.86 : x
  2. Step 2: Convert to fraction form
    90,206.40/124,481.76 = 49,921.86/x
  3. Step 3: Cross multiply
    90,206.40x = 124,481.76 × 49,921.86
  4. Step 4: Simplify right side
    90,206.40x = 6,214,360,995.27
  5. Step 5: Solve for x
    x = 6,214,360,995.27/90,206.40
  6. Step 6: Final answer
    x = 68,890.47

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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.