Home / 78,264.23-117,185.99-64,391.66

Finding the Fourth Proportional to 78,264.23, 117,185.99 and 64,391.66

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Solution

The fourth proportional to 78,264.23, 117,185.99 and 64,391.66 is: 96,414.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,264.23 : 117,185.99 = 64,391.66 : x
  2. Step 2: Convert to fraction form
    78,264.23/117,185.99 = 64,391.66/x
  3. Step 3: Cross multiply
    78,264.23x = 117,185.99 × 64,391.66
  4. Step 4: Simplify right side
    78,264.23x = 7,545,800,318.61
  5. Step 5: Solve for x
    x = 7,545,800,318.61/78,264.23
  6. Step 6: Final answer
    x = 96,414.43

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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.