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Finding the Fourth Proportional to 101,361.37, 139,872.66 and 56,036.63

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Solution

The fourth proportional to 101,361.37, 139,872.66 and 56,036.63 is: 77,327.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,361.37 : 139,872.66 = 56,036.63 : x
  2. Step 2: Convert to fraction form
    101,361.37/139,872.66 = 56,036.63/x
  3. Step 3: Cross multiply
    101,361.37x = 139,872.66 × 56,036.63
  4. Step 4: Simplify right side
    101,361.37x = 7,837,992,495.54
  5. Step 5: Solve for x
    x = 7,837,992,495.54/101,361.37
  6. Step 6: Final answer
    x = 77,327.22

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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.