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Finding the Fourth Proportional to 101,366.31, 139,883.04 and 56,043.12

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Solution

The fourth proportional to 101,366.31, 139,883.04 and 56,043.12 is: 77,338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,366.31 : 139,883.04 = 56,043.12 : x
  2. Step 2: Convert to fraction form
    101,366.31/139,883.04 = 56,043.12/x
  3. Step 3: Cross multiply
    101,366.31x = 139,883.04 × 56,043.12
  4. Step 4: Simplify right side
    101,366.31x = 7,839,481,996.68
  5. Step 5: Solve for x
    x = 7,839,481,996.68/101,366.31
  6. Step 6: Final answer
    x = 77,338.14

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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.