Home / 68,439.71-102,641.74-28,976.51

Finding the Fourth Proportional to 68,439.71, 102,641.74 and 28,976.51

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Solution

The fourth proportional to 68,439.71, 102,641.74 and 28,976.51 is: 43,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,439.71 : 102,641.74 = 28,976.51 : x
  2. Step 2: Convert to fraction form
    68,439.71/102,641.74 = 28,976.51/x
  3. Step 3: Cross multiply
    68,439.71x = 102,641.74 × 28,976.51
  4. Step 4: Simplify right side
    68,439.71x = 2,974,198,819.88
  5. Step 5: Solve for x
    x = 2,974,198,819.88/68,439.71
  6. Step 6: Final answer
    x = 43,457.21

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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.