Home / 40,087.43-55,305.74-30,891.70

Finding the Fourth Proportional to 40,087.43, 55,305.74 and 30,891.70

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Solution

The fourth proportional to 40,087.43, 55,305.74 and 30,891.70 is: 42,619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,087.43 : 55,305.74 = 30,891.70 : x
  2. Step 2: Convert to fraction form
    40,087.43/55,305.74 = 30,891.70/x
  3. Step 3: Cross multiply
    40,087.43x = 55,305.74 × 30,891.70
  4. Step 4: Simplify right side
    40,087.43x = 1,708,487,897.37
  5. Step 5: Solve for x
    x = 1,708,487,897.37/40,087.43
  6. Step 6: Final answer
    x = 42,619.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.