Home / 45,057.15-67,618.79-20,113.57

Finding the Fourth Proportional to 45,057.15, 67,618.79 and 20,113.57

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Solution

The fourth proportional to 45,057.15, 67,618.79 and 20,113.57 is: 30,185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,057.15 : 67,618.79 = 20,113.57 : x
  2. Step 2: Convert to fraction form
    45,057.15/67,618.79 = 20,113.57/x
  3. Step 3: Cross multiply
    45,057.15x = 67,618.79 × 20,113.57
  4. Step 4: Simplify right side
    45,057.15x = 1,360,055,044.00
  5. Step 5: Solve for x
    x = 1,360,055,044.00/45,057.15
  6. Step 6: Final answer
    x = 30,185.11

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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.