Home / 68,947.53-103,325.61-31,415.87

Finding the Fourth Proportional to 68,947.53, 103,325.61 and 31,415.87

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Solution

The fourth proportional to 68,947.53, 103,325.61 and 31,415.87 is: 47,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,947.53 : 103,325.61 = 31,415.87 : x
  2. Step 2: Convert to fraction form
    68,947.53/103,325.61 = 31,415.87/x
  3. Step 3: Cross multiply
    68,947.53x = 103,325.61 × 31,415.87
  4. Step 4: Simplify right side
    68,947.53x = 3,246,064,189.74
  5. Step 5: Solve for x
    x = 3,246,064,189.74/68,947.53
  6. Step 6: Final answer
    x = 47,080.21

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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.