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Finding the Fourth Proportional to 101,035.65, 139,418.37 and 55,710.75

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Solution

The fourth proportional to 101,035.65, 139,418.37 and 55,710.75 is: 76,874.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,035.65 : 139,418.37 = 55,710.75 : x
  2. Step 2: Convert to fraction form
    101,035.65/139,418.37 = 55,710.75/x
  3. Step 3: Cross multiply
    101,035.65x = 139,418.37 × 55,710.75
  4. Step 4: Simplify right side
    101,035.65x = 7,767,101,956.48
  5. Step 5: Solve for x
    x = 7,767,101,956.48/101,035.65
  6. Step 6: Final answer
    x = 76,874.87

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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.