Home / 101,045.11-139,439.94-55,721.81

Finding the Fourth Proportional to 101,045.11, 139,439.94 and 55,721.81

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Solution

The fourth proportional to 101,045.11, 139,439.94 and 55,721.81 is: 76,894.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,045.11 : 139,439.94 = 55,721.81 : x
  2. Step 2: Convert to fraction form
    101,045.11/139,439.94 = 55,721.81/x
  3. Step 3: Cross multiply
    101,045.11x = 139,439.94 × 55,721.81
  4. Step 4: Simplify right side
    101,045.11x = 7,769,845,843.09
  5. Step 5: Solve for x
    x = 7,769,845,843.09/101,045.11
  6. Step 6: Final answer
    x = 76,894.82

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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.