Home / 112,621.32-168,928.74-28,381.32

Finding the Fourth Proportional to 112,621.32, 168,928.74 and 28,381.32

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Solution

The fourth proportional to 112,621.32, 168,928.74 and 28,381.32 is: 42,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,621.32 : 168,928.74 = 28,381.32 : x
  2. Step 2: Convert to fraction form
    112,621.32/168,928.74 = 28,381.32/x
  3. Step 3: Cross multiply
    112,621.32x = 168,928.74 × 28,381.32
  4. Step 4: Simplify right side
    112,621.32x = 4,794,420,627.14
  5. Step 5: Solve for x
    x = 4,794,420,627.14/112,621.32
  6. Step 6: Final answer
    x = 42,571.16

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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.