Home / 68,077.83-102,116.73-20,693.31

Finding the Fourth Proportional to 68,077.83, 102,116.73 and 20,693.31

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Solution

The fourth proportional to 68,077.83, 102,116.73 and 20,693.31 is: 31,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,077.83 : 102,116.73 = 20,693.31 : x
  2. Step 2: Convert to fraction form
    68,077.83/102,116.73 = 20,693.31/x
  3. Step 3: Cross multiply
    68,077.83x = 102,116.73 × 20,693.31
  4. Step 4: Simplify right side
    68,077.83x = 2,113,132,844.74
  5. Step 5: Solve for x
    x = 2,113,132,844.74/68,077.83
  6. Step 6: Final answer
    x = 31,039.95

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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.