Home / 85,841.20-128,761.80-23,511.70

Finding the Fourth Proportional to 85,841.20, 128,761.80 and 23,511.70

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Solution

The fourth proportional to 85,841.20, 128,761.80 and 23,511.70 is: 35,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,841.20 : 128,761.80 = 23,511.70 : x
  2. Step 2: Convert to fraction form
    85,841.20/128,761.80 = 23,511.70/x
  3. Step 3: Cross multiply
    85,841.20x = 128,761.80 × 23,511.70
  4. Step 4: Simplify right side
    85,841.20x = 3,027,408,813.06
  5. Step 5: Solve for x
    x = 3,027,408,813.06/85,841.20
  6. Step 6: Final answer
    x = 35,267.55

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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.