Home / 72,738.64-109,043.26-28,396.46

Finding the Fourth Proportional to 72,738.64, 109,043.26 and 28,396.46

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Solution

The fourth proportional to 72,738.64, 109,043.26 and 28,396.46 is: 42,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,738.64 : 109,043.26 = 28,396.46 : x
  2. Step 2: Convert to fraction form
    72,738.64/109,043.26 = 28,396.46/x
  3. Step 3: Cross multiply
    72,738.64x = 109,043.26 × 28,396.46
  4. Step 4: Simplify right side
    72,738.64x = 3,096,442,318.84
  5. Step 5: Solve for x
    x = 3,096,442,318.84/72,738.64
  6. Step 6: Final answer
    x = 42,569.43

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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.