Home / 85,743.36-128,615.04-35,796.20

Finding the Fourth Proportional to 85,743.36, 128,615.04 and 35,796.20

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Solution

The fourth proportional to 85,743.36, 128,615.04 and 35,796.20 is: 53,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,743.36 : 128,615.04 = 35,796.20 : x
  2. Step 2: Convert to fraction form
    85,743.36/128,615.04 = 35,796.20/x
  3. Step 3: Cross multiply
    85,743.36x = 128,615.04 × 35,796.20
  4. Step 4: Simplify right side
    85,743.36x = 4,603,929,694.85
  5. Step 5: Solve for x
    x = 4,603,929,694.85/85,743.36
  6. Step 6: Final answer
    x = 53,694.30

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Similar ratio
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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.