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Finding the Fourth Proportional to 101,277.68, 139,764.66 and 55,956.71

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Solution

The fourth proportional to 101,277.68, 139,764.66 and 55,956.71 is: 77,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,277.68 : 139,764.66 = 55,956.71 : x
  2. Step 2: Convert to fraction form
    101,277.68/139,764.66 = 55,956.71/x
  3. Step 3: Cross multiply
    101,277.68x = 139,764.66 × 55,956.71
  4. Step 4: Simplify right side
    101,277.68x = 7,820,769,569.26
  5. Step 5: Solve for x
    x = 7,820,769,569.26/101,277.68
  6. Step 6: Final answer
    x = 77,221.06

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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.