Home / 90,105.74-124,345.10-49,820.54

Finding the Fourth Proportional to 90,105.74, 124,345.10 and 49,820.54

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Solution

The fourth proportional to 90,105.74, 124,345.10 and 49,820.54 is: 68,751.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.74 : 124,345.10 = 49,820.54 : x
  2. Step 2: Convert to fraction form
    90,105.74/124,345.10 = 49,820.54/x
  3. Step 3: Cross multiply
    90,105.74x = 124,345.10 × 49,820.54
  4. Step 4: Simplify right side
    90,105.74x = 6,194,940,028.35
  5. Step 5: Solve for x
    x = 6,194,940,028.35/90,105.74
  6. Step 6: Final answer
    x = 68,751.89

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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.