Home / 68,810.35-103,215.68-18,891.13

Finding the Fourth Proportional to 68,810.35, 103,215.68 and 18,891.13

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Solution

The fourth proportional to 68,810.35, 103,215.68 and 18,891.13 is: 28,336.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,810.35 : 103,215.68 = 18,891.13 : x
  2. Step 2: Convert to fraction form
    68,810.35/103,215.68 = 18,891.13/x
  3. Step 3: Cross multiply
    68,810.35x = 103,215.68 × 18,891.13
  4. Step 4: Simplify right side
    68,810.35x = 1,949,860,618.11
  5. Step 5: Solve for x
    x = 1,949,860,618.11/68,810.35
  6. Step 6: Final answer
    x = 28,336.74

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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.