Home / 68,947.28-103,325.23-31,415.63

Finding the Fourth Proportional to 68,947.28, 103,325.23 and 31,415.63

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Solution

The fourth proportional to 68,947.28, 103,325.23 and 31,415.63 is: 47,079.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,947.28 : 103,325.23 = 31,415.63 : x
  2. Step 2: Convert to fraction form
    68,947.28/103,325.23 = 31,415.63/x
  3. Step 3: Cross multiply
    68,947.28x = 103,325.23 × 31,415.63
  4. Step 4: Simplify right side
    68,947.28x = 3,246,027,195.34
  5. Step 5: Solve for x
    x = 3,246,027,195.34/68,947.28
  6. Step 6: Final answer
    x = 47,079.84

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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.