Home / 85,739.16-118,290.84-49,921.58

Finding the Fourth Proportional to 85,739.16, 118,290.84 and 49,921.58

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Solution

The fourth proportional to 85,739.16, 118,290.84 and 49,921.58 is: 68,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,739.16 : 118,290.84 = 49,921.58 : x
  2. Step 2: Convert to fraction form
    85,739.16/118,290.84 = 49,921.58/x
  3. Step 3: Cross multiply
    85,739.16x = 118,290.84 × 49,921.58
  4. Step 4: Simplify right side
    85,739.16x = 5,905,265,632.33
  5. Step 5: Solve for x
    x = 5,905,265,632.33/85,739.16
  6. Step 6: Final answer
    x = 68,874.78

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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.