Home / 30,112.88-45,400.37-28,080.23

Finding the Fourth Proportional to 30,112.88, 45,400.37 and 28,080.23

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Solution

The fourth proportional to 30,112.88, 45,400.37 and 28,080.23 is: 42,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,112.88 : 45,400.37 = 28,080.23 : x
  2. Step 2: Convert to fraction form
    30,112.88/45,400.37 = 28,080.23/x
  3. Step 3: Cross multiply
    30,112.88x = 45,400.37 × 28,080.23
  4. Step 4: Simplify right side
    30,112.88x = 1,274,852,464.28
  5. Step 5: Solve for x
    x = 1,274,852,464.28/30,112.88
  6. Step 6: Final answer
    x = 42,335.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.