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Finding the Fourth Proportional to 101,361.54, 139,881.84 and 56,042.45

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Solution

The fourth proportional to 101,361.54, 139,881.84 and 56,042.45 is: 77,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,361.54 : 139,881.84 = 56,042.45 : x
  2. Step 2: Convert to fraction form
    101,361.54/139,881.84 = 56,042.45/x
  3. Step 3: Cross multiply
    101,361.54x = 139,881.84 × 56,042.45
  4. Step 4: Simplify right side
    101,361.54x = 7,839,320,429.78
  5. Step 5: Solve for x
    x = 7,839,320,429.78/101,361.54
  6. Step 6: Final answer
    x = 77,340.19

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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.