Home / 85,738.15-118,289.46-49,920.58

Finding the Fourth Proportional to 85,738.15, 118,289.46 and 49,920.58

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Solution

The fourth proportional to 85,738.15, 118,289.46 and 49,920.58 is: 68,873.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,738.15 : 118,289.46 = 49,920.58 : x
  2. Step 2: Convert to fraction form
    85,738.15/118,289.46 = 49,920.58/x
  3. Step 3: Cross multiply
    85,738.15x = 118,289.46 × 49,920.58
  4. Step 4: Simplify right side
    85,738.15x = 5,905,078,451.09
  5. Step 5: Solve for x
    x = 5,905,078,451.09/85,738.15
  6. Step 6: Final answer
    x = 68,873.41

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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.