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Finding the Fourth Proportional to 77,372.22, 106,078.30 and 75,972.54

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Solution

The fourth proportional to 77,372.22, 106,078.30 and 75,972.54 is: 104,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,372.22 : 106,078.30 = 75,972.54 : x
  2. Step 2: Convert to fraction form
    77,372.22/106,078.30 = 75,972.54/x
  3. Step 3: Cross multiply
    77,372.22x = 106,078.30 × 75,972.54
  4. Step 4: Simplify right side
    77,372.22x = 8,059,037,889.88
  5. Step 5: Solve for x
    x = 8,059,037,889.88/77,372.22
  6. Step 6: Final answer
    x = 104,159.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.