Home / 75,991.32-113,986.97-20,587.32

Finding the Fourth Proportional to 75,991.32, 113,986.97 and 20,587.32

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Solution

The fourth proportional to 75,991.32, 113,986.97 and 20,587.32 is: 30,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,991.32 : 113,986.97 = 20,587.32 : x
  2. Step 2: Convert to fraction form
    75,991.32/113,986.97 = 20,587.32/x
  3. Step 3: Cross multiply
    75,991.32x = 113,986.97 × 20,587.32
  4. Step 4: Simplify right side
    75,991.32x = 2,346,686,124.28
  5. Step 5: Solve for x
    x = 2,346,686,124.28/75,991.32
  6. Step 6: Final answer
    x = 30,880.98

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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.