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Finding the Fourth Proportional to 101,406.44, 139,937.54 and 56,083.70

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Solution

The fourth proportional to 101,406.44, 139,937.54 and 56,083.70 is: 77,393.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,406.44 : 139,937.54 = 56,083.70 : x
  2. Step 2: Convert to fraction form
    101,406.44/139,937.54 = 56,083.70/x
  3. Step 3: Cross multiply
    101,406.44x = 139,937.54 × 56,083.70
  4. Step 4: Simplify right side
    101,406.44x = 7,848,215,012.10
  5. Step 5: Solve for x
    x = 7,848,215,012.10/101,406.44
  6. Step 6: Final answer
    x = 77,393.65

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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.