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Finding the Fourth Proportional to 101,063, 139,465.05 and 55,745.21

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Solution

The fourth proportional to 101,063, 139,465.05 and 55,745.21 is: 76,927.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,063 : 139,465.05 = 55,745.21 : x
  2. Step 2: Convert to fraction form
    101,063/139,465.05 = 55,745.21/x
  3. Step 3: Cross multiply
    101,063x = 139,465.05 × 55,745.21
  4. Step 4: Simplify right side
    101,063x = 7,774,508,499.91
  5. Step 5: Solve for x
    x = 7,774,508,499.91/101,063
  6. Step 6: Final answer
    x = 76,927.35

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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.