Home / 68,947.19-103,386.72-40,491.28

Finding the Fourth Proportional to 68,947.19, 103,386.72 and 40,491.28

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Solution

The fourth proportional to 68,947.19, 103,386.72 and 40,491.28 is: 60,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,947.19 : 103,386.72 = 40,491.28 : x
  2. Step 2: Convert to fraction form
    68,947.19/103,386.72 = 40,491.28/x
  3. Step 3: Cross multiply
    68,947.19x = 103,386.72 × 40,491.28
  4. Step 4: Simplify right side
    68,947.19x = 4,186,260,110.87
  5. Step 5: Solve for x
    x = 4,186,260,110.87/68,947.19
  6. Step 6: Final answer
    x = 60,716.91

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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.