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Finding the Fourth Proportional to 85,668.32, 118,205.87 and 55,449.44

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Solution

The fourth proportional to 85,668.32, 118,205.87 and 55,449.44 is: 76,509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,668.32 : 118,205.87 = 55,449.44 : x
  2. Step 2: Convert to fraction form
    85,668.32/118,205.87 = 55,449.44/x
  3. Step 3: Cross multiply
    85,668.32x = 118,205.87 × 55,449.44
  4. Step 4: Simplify right side
    85,668.32x = 6,554,449,296.21
  5. Step 5: Solve for x
    x = 6,554,449,296.21/85,668.32
  6. Step 6: Final answer
    x = 76,509.61

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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.