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Finding the Fourth Proportional to 101,372.34, 139,887.83 and 56,046.76

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Solution

The fourth proportional to 101,372.34, 139,887.83 and 56,046.76 is: 77,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,372.34 : 139,887.83 = 56,046.76 : x
  2. Step 2: Convert to fraction form
    101,372.34/139,887.83 = 56,046.76/x
  3. Step 3: Cross multiply
    101,372.34x = 139,887.83 × 56,046.76
  4. Step 4: Simplify right side
    101,372.34x = 7,840,259,634.93
  5. Step 5: Solve for x
    x = 7,840,259,634.93/101,372.34
  6. Step 6: Final answer
    x = 77,341.21

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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.