Home / 82,621.62-123,928.79-26,464.32

Finding the Fourth Proportional to 82,621.62, 123,928.79 and 26,464.32

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Solution

The fourth proportional to 82,621.62, 123,928.79 and 26,464.32 is: 39,695.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,621.62 : 123,928.79 = 26,464.32 : x
  2. Step 2: Convert to fraction form
    82,621.62/123,928.79 = 26,464.32/x
  3. Step 3: Cross multiply
    82,621.62x = 123,928.79 × 26,464.32
  4. Step 4: Simplify right side
    82,621.62x = 3,279,691,023.45
  5. Step 5: Solve for x
    x = 3,279,691,023.45/82,621.62
  6. Step 6: Final answer
    x = 39,695.31

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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.