Home / 90,074.78-124,303.16-49,788.57

Finding the Fourth Proportional to 90,074.78, 124,303.16 and 49,788.57

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Solution

The fourth proportional to 90,074.78, 124,303.16 and 49,788.57 is: 68,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,074.78 : 124,303.16 = 49,788.57 : x
  2. Step 2: Convert to fraction form
    90,074.78/124,303.16 = 49,788.57/x
  3. Step 3: Cross multiply
    90,074.78x = 124,303.16 × 49,788.57
  4. Step 4: Simplify right side
    90,074.78x = 6,188,876,893.43
  5. Step 5: Solve for x
    x = 6,188,876,893.43/90,074.78
  6. Step 6: Final answer
    x = 68,708.21

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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.