Home / 77,372.46-106,078.64-75,972.78

Finding the Fourth Proportional to 77,372.46, 106,078.64 and 75,972.78

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Solution

The fourth proportional to 77,372.46, 106,078.64 and 75,972.78 is: 104,159.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,372.46 : 106,078.64 = 75,972.78 : x
  2. Step 2: Convert to fraction form
    77,372.46/106,078.64 = 75,972.78/x
  3. Step 3: Cross multiply
    77,372.46x = 106,078.64 × 75,972.78
  4. Step 4: Simplify right side
    77,372.46x = 8,059,088,799.56
  5. Step 5: Solve for x
    x = 8,059,088,799.56/77,372.46
  6. Step 6: Final answer
    x = 104,159.66

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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.