Home / 68,741.10-103,111.57-18,821.58

Finding the Fourth Proportional to 68,741.10, 103,111.57 and 18,821.58

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Solution

The fourth proportional to 68,741.10, 103,111.57 and 18,821.58 is: 28,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,741.10 : 103,111.57 = 18,821.58 : x
  2. Step 2: Convert to fraction form
    68,741.10/103,111.57 = 18,821.58/x
  3. Step 3: Cross multiply
    68,741.10x = 103,111.57 × 18,821.58
  4. Step 4: Simplify right side
    68,741.10x = 1,940,722,663.68
  5. Step 5: Solve for x
    x = 1,940,722,663.68/68,741.10
  6. Step 6: Final answer
    x = 28,232.35

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1.5x scale

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.