Home / 45,112.32-67,692.96-18,819.36

Finding the Fourth Proportional to 45,112.32, 67,692.96 and 18,819.36

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Solution

The fourth proportional to 45,112.32, 67,692.96 and 18,819.36 is: 28,239.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,112.32 : 67,692.96 = 18,819.36 : x
  2. Step 2: Convert to fraction form
    45,112.32/67,692.96 = 18,819.36/x
  3. Step 3: Cross multiply
    45,112.32x = 67,692.96 × 18,819.36
  4. Step 4: Simplify right side
    45,112.32x = 1,273,938,183.71
  5. Step 5: Solve for x
    x = 1,273,938,183.71/45,112.32
  6. Step 6: Final answer
    x = 28,239.25

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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.