Home / 85,682.85-128,546.46-50,174.18

Finding the Fourth Proportional to 85,682.85, 128,546.46 and 50,174.18

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Solution

The fourth proportional to 85,682.85, 128,546.46 and 50,174.18 is: 75,274.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682.85 : 128,546.46 = 50,174.18 : x
  2. Step 2: Convert to fraction form
    85,682.85/128,546.46 = 50,174.18/x
  3. Step 3: Cross multiply
    85,682.85x = 128,546.46 × 50,174.18
  4. Step 4: Simplify right side
    85,682.85x = 6,449,712,488.51
  5. Step 5: Solve for x
    x = 6,449,712,488.51/85,682.85
  6. Step 6: Final answer
    x = 75,274.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.