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Finding the Fourth Proportional to 101,133.15, 139,572.68 and 55,820.94

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Solution

The fourth proportional to 101,133.15, 139,572.68 and 55,820.94 is: 77,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,133.15 : 139,572.68 = 55,820.94 : x
  2. Step 2: Convert to fraction form
    101,133.15/139,572.68 = 55,820.94/x
  3. Step 3: Cross multiply
    101,133.15x = 139,572.68 × 55,820.94
  4. Step 4: Simplify right side
    101,133.15x = 7,791,078,195.92
  5. Step 5: Solve for x
    x = 7,791,078,195.92/101,133.15
  6. Step 6: Final answer
    x = 77,037.83

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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.