Home / 45,415.32-68,099.52-20,434.11

Finding the Fourth Proportional to 45,415.32, 68,099.52 and 20,434.11

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Solution

The fourth proportional to 45,415.32, 68,099.52 and 20,434.11 is: 30,640.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,415.32 : 68,099.52 = 20,434.11 : x
  2. Step 2: Convert to fraction form
    45,415.32/68,099.52 = 20,434.11/x
  3. Step 3: Cross multiply
    45,415.32x = 68,099.52 × 20,434.11
  4. Step 4: Simplify right side
    45,415.32x = 1,391,553,082.63
  5. Step 5: Solve for x
    x = 1,391,553,082.63/45,415.32
  6. Step 6: Final answer
    x = 30,640.61

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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.