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Finding the Fourth Proportional to 101,093.62, 139,516.93 and 55,780.35

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Solution

The fourth proportional to 101,093.62, 139,516.93 and 55,780.35 is: 76,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,093.62 : 139,516.93 = 55,780.35 : x
  2. Step 2: Convert to fraction form
    101,093.62/139,516.93 = 55,780.35/x
  3. Step 3: Cross multiply
    101,093.62x = 139,516.93 × 55,780.35
  4. Step 4: Simplify right side
    101,093.62x = 7,782,302,732.86
  5. Step 5: Solve for x
    x = 7,782,302,732.86/101,093.62
  6. Step 6: Final answer
    x = 76,981.15

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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.