Home / 68,664.13-94,748.52-39,990.06

Finding the Fourth Proportional to 68,664.13, 94,748.52 and 39,990.06

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Solution

The fourth proportional to 68,664.13, 94,748.52 and 39,990.06 is: 55,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,664.13 : 94,748.52 = 39,990.06 : x
  2. Step 2: Convert to fraction form
    68,664.13/94,748.52 = 39,990.06/x
  3. Step 3: Cross multiply
    68,664.13x = 94,748.52 × 39,990.06
  4. Step 4: Simplify right side
    68,664.13x = 3,788,998,326.02
  5. Step 5: Solve for x
    x = 3,788,998,326.02/68,664.13
  6. Step 6: Final answer
    x = 55,181.63

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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.