Home / 78,943.25-109,029.98-61,252.85

Finding the Fourth Proportional to 78,943.25, 109,029.98 and 61,252.85

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Solution

The fourth proportional to 78,943.25, 109,029.98 and 61,252.85 is: 84,597.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.25 : 109,029.98 = 61,252.85 : x
  2. Step 2: Convert to fraction form
    78,943.25/109,029.98 = 61,252.85/x
  3. Step 3: Cross multiply
    78,943.25x = 109,029.98 × 61,252.85
  4. Step 4: Simplify right side
    78,943.25x = 6,678,397,010.44
  5. Step 5: Solve for x
    x = 6,678,397,010.44/78,943.25
  6. Step 6: Final answer
    x = 84,597.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.