Home / 54,860.12-75,708.44-30,990.32

Finding the Fourth Proportional to 54,860.12, 75,708.44 and 30,990.32

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Solution

The fourth proportional to 54,860.12, 75,708.44 and 30,990.32 is: 42,767.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,860.12 : 75,708.44 = 30,990.32 : x
  2. Step 2: Convert to fraction form
    54,860.12/75,708.44 = 30,990.32/x
  3. Step 3: Cross multiply
    54,860.12x = 75,708.44 × 30,990.32
  4. Step 4: Simplify right side
    54,860.12x = 2,346,228,782.30
  5. Step 5: Solve for x
    x = 2,346,228,782.30/54,860.12
  6. Step 6: Final answer
    x = 42,767.47

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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.