Home / 68,947.10-103,420.65-51,451.10

Finding the Fourth Proportional to 68,947.10, 103,420.65 and 51,451.10

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Solution

The fourth proportional to 68,947.10, 103,420.65 and 51,451.10 is: 77,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,947.10 : 103,420.65 = 51,451.10 : x
  2. Step 2: Convert to fraction form
    68,947.10/103,420.65 = 51,451.10/x
  3. Step 3: Cross multiply
    68,947.10x = 103,420.65 × 51,451.10
  4. Step 4: Simplify right side
    68,947.10x = 5,321,106,205.22
  5. Step 5: Solve for x
    x = 5,321,106,205.22/68,947.10
  6. Step 6: Final answer
    x = 77,176.65

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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.