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Finding the Fourth Proportional to 101,382.60, 139,906.52 and 56,059.58

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Solution

The fourth proportional to 101,382.60, 139,906.52 and 56,059.58 is: 77,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,382.60 : 139,906.52 = 56,059.58 : x
  2. Step 2: Convert to fraction form
    101,382.60/139,906.52 = 56,059.58/x
  3. Step 3: Cross multiply
    101,382.60x = 139,906.52 × 56,059.58
  4. Step 4: Simplify right side
    101,382.60x = 7,843,100,750.46
  5. Step 5: Solve for x
    x = 7,843,100,750.46/101,382.60
  6. Step 6: Final answer
    x = 77,361.41

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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.