Home / 86,215.78-129,355.26-36,308.44

Finding the Fourth Proportional to 86,215.78, 129,355.26 and 36,308.44

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Solution

The fourth proportional to 86,215.78, 129,355.26 and 36,308.44 is: 54,475.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,215.78 : 129,355.26 = 36,308.44 : x
  2. Step 2: Convert to fraction form
    86,215.78/129,355.26 = 36,308.44/x
  3. Step 3: Cross multiply
    86,215.78x = 129,355.26 × 36,308.44
  4. Step 4: Simplify right side
    86,215.78x = 4,696,687,696.39
  5. Step 5: Solve for x
    x = 4,696,687,696.39/86,215.78
  6. Step 6: Final answer
    x = 54,475.96

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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.