Home / 101,027.76-139,419.30-55,707.36

Finding the Fourth Proportional to 101,027.76, 139,419.30 and 55,707.36

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Solution

The fourth proportional to 101,027.76, 139,419.30 and 55,707.36 is: 76,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,027.76 : 139,419.30 = 55,707.36 : x
  2. Step 2: Convert to fraction form
    101,027.76/139,419.30 = 55,707.36/x
  3. Step 3: Cross multiply
    101,027.76x = 139,419.30 × 55,707.36
  4. Step 4: Simplify right side
    101,027.76x = 7,766,681,136.05
  5. Step 5: Solve for x
    x = 7,766,681,136.05/101,027.76
  6. Step 6: Final answer
    x = 76,876.70

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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.