Home / 85,694.11-128,539.80-23,364.61

Finding the Fourth Proportional to 85,694.11, 128,539.80 and 23,364.61

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Solution

The fourth proportional to 85,694.11, 128,539.80 and 23,364.61 is: 35,046.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,694.11 : 128,539.80 = 23,364.61 : x
  2. Step 2: Convert to fraction form
    85,694.11/128,539.80 = 23,364.61/x
  3. Step 3: Cross multiply
    85,694.11x = 128,539.80 × 23,364.61
  4. Step 4: Simplify right side
    85,694.11x = 3,003,281,975.13
  5. Step 5: Solve for x
    x = 3,003,281,975.13/85,694.11
  6. Step 6: Final answer
    x = 35,046.54

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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.