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Finding the Fourth Proportional to 101,294.28, 139,778.88 and 55,971.76

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Solution

The fourth proportional to 101,294.28, 139,778.88 and 55,971.76 is: 77,237.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,294.28 : 139,778.88 = 55,971.76 : x
  2. Step 2: Convert to fraction form
    101,294.28/139,778.88 = 55,971.76/x
  3. Step 3: Cross multiply
    101,294.28x = 139,778.88 × 55,971.76
  4. Step 4: Simplify right side
    101,294.28x = 7,823,669,924.43
  5. Step 5: Solve for x
    x = 7,823,669,924.43/101,294.28
  6. Step 6: Final answer
    x = 77,237.04

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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.