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Finding the Fourth Proportional to 77,081.32, 115,620.36 and 35,528.32

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Solution

The fourth proportional to 77,081.32, 115,620.36 and 35,528.32 is: 53,291.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,081.32 : 115,620.36 = 35,528.32 : x
  2. Step 2: Convert to fraction form
    77,081.32/115,620.36 = 35,528.32/x
  3. Step 3: Cross multiply
    77,081.32x = 115,620.36 × 35,528.32
  4. Step 4: Simplify right side
    77,081.32x = 4,107,797,148.60
  5. Step 5: Solve for x
    x = 4,107,797,148.60/77,081.32
  6. Step 6: Final answer
    x = 53,291.73

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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.