Home / 86,531.11-129,810.39-36,611.58

Finding the Fourth Proportional to 86,531.11, 129,810.39 and 36,611.58

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Solution

The fourth proportional to 86,531.11, 129,810.39 and 36,611.58 is: 54,923.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,531.11 : 129,810.39 = 36,611.58 : x
  2. Step 2: Convert to fraction form
    86,531.11/129,810.39 = 36,611.58/x
  3. Step 3: Cross multiply
    86,531.11x = 129,810.39 × 36,611.58
  4. Step 4: Simplify right side
    86,531.11x = 4,752,563,200.60
  5. Step 5: Solve for x
    x = 4,752,563,200.60/86,531.11
  6. Step 6: Final answer
    x = 54,923.17

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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.