Home / 45,240.13-67,838.61-20,280.37

Finding the Fourth Proportional to 45,240.13, 67,838.61 and 20,280.37

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Solution

The fourth proportional to 45,240.13, 67,838.61 and 20,280.37 is: 30,410.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,240.13 : 67,838.61 = 20,280.37 : x
  2. Step 2: Convert to fraction form
    45,240.13/67,838.61 = 20,280.37/x
  3. Step 3: Cross multiply
    45,240.13x = 67,838.61 × 20,280.37
  4. Step 4: Simplify right side
    45,240.13x = 1,375,792,111.09
  5. Step 5: Solve for x
    x = 1,375,792,111.09/45,240.13
  6. Step 6: Final answer
    x = 30,410.88

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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.