Home / 68,730.19-103,111.43-21,342.84

Finding the Fourth Proportional to 68,730.19, 103,111.43 and 21,342.84

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Solution

The fourth proportional to 68,730.19, 103,111.43 and 21,342.84 is: 32,019.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.19 : 103,111.43 = 21,342.84 : x
  2. Step 2: Convert to fraction form
    68,730.19/103,111.43 = 21,342.84/x
  3. Step 3: Cross multiply
    68,730.19x = 103,111.43 × 21,342.84
  4. Step 4: Simplify right side
    68,730.19x = 2,200,690,752.66
  5. Step 5: Solve for x
    x = 2,200,690,752.66/68,730.19
  6. Step 6: Final answer
    x = 32,019.27

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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.