Home / 45,118.02-67,669.34-18,815.70

Finding the Fourth Proportional to 45,118.02, 67,669.34 and 18,815.70

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Solution

The fourth proportional to 45,118.02, 67,669.34 and 18,815.70 is: 28,220.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,118.02 : 67,669.34 = 18,815.70 : x
  2. Step 2: Convert to fraction form
    45,118.02/67,669.34 = 18,815.70/x
  3. Step 3: Cross multiply
    45,118.02x = 67,669.34 × 18,815.70
  4. Step 4: Simplify right side
    45,118.02x = 1,273,245,906.56
  5. Step 5: Solve for x
    x = 1,273,245,906.56/45,118.02
  6. Step 6: Final answer
    x = 28,220.34

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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.