Home / 85,679.05-128,515.37-22,498.60

Finding the Fourth Proportional to 85,679.05, 128,515.37 and 22,498.60

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Solution

The fourth proportional to 85,679.05, 128,515.37 and 22,498.60 is: 33,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,679.05 : 128,515.37 = 22,498.60 : x
  2. Step 2: Convert to fraction form
    85,679.05/128,515.37 = 22,498.60/x
  3. Step 3: Cross multiply
    85,679.05x = 128,515.37 × 22,498.60
  4. Step 4: Simplify right side
    85,679.05x = 2,891,415,148.41
  5. Step 5: Solve for x
    x = 2,891,415,148.41/85,679.05
  6. Step 6: Final answer
    x = 33,747.05

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Double scale
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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.