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Finding the Fourth Proportional to 77,523.63, 107,012.21 and 75,390.60

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Solution

The fourth proportional to 77,523.63, 107,012.21 and 75,390.60 is: 104,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,523.63 : 107,012.21 = 75,390.60 : x
  2. Step 2: Convert to fraction form
    77,523.63/107,012.21 = 75,390.60/x
  3. Step 3: Cross multiply
    77,523.63x = 107,012.21 × 75,390.60
  4. Step 4: Simplify right side
    77,523.63x = 8,067,714,743.57
  5. Step 5: Solve for x
    x = 8,067,714,743.57/77,523.63
  6. Step 6: Final answer
    x = 104,067.82

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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.