Home / 45,086.91-67,636.52-18,785.51

Finding the Fourth Proportional to 45,086.91, 67,636.52 and 18,785.51

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Solution

The fourth proportional to 45,086.91, 67,636.52 and 18,785.51 is: 28,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,086.91 : 67,636.52 = 18,785.51 : x
  2. Step 2: Convert to fraction form
    45,086.91/67,636.52 = 18,785.51/x
  3. Step 3: Cross multiply
    45,086.91x = 67,636.52 × 18,785.51
  4. Step 4: Simplify right side
    45,086.91x = 1,270,586,090.72
  5. Step 5: Solve for x
    x = 1,270,586,090.72/45,086.91
  6. Step 6: Final answer
    x = 28,180.82

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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.