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Finding the Fourth Proportional to 101,283.96, 139,778.43 and 55,961.93

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Solution

The fourth proportional to 101,283.96, 139,778.43 and 55,961.93 is: 77,231.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,283.96 : 139,778.43 = 55,961.93 : x
  2. Step 2: Convert to fraction form
    101,283.96/139,778.43 = 55,961.93/x
  3. Step 3: Cross multiply
    101,283.96x = 139,778.43 × 55,961.93
  4. Step 4: Simplify right side
    101,283.96x = 7,822,271,064.62
  5. Step 5: Solve for x
    x = 7,822,271,064.62/101,283.96
  6. Step 6: Final answer
    x = 77,231.09

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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.