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Finding the Fourth Proportional to 72,952.70, 100,671.81 and 41,128.21

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Solution

The fourth proportional to 72,952.70, 100,671.81 and 41,128.21 is: 56,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,952.70 : 100,671.81 = 41,128.21 : x
  2. Step 2: Convert to fraction form
    72,952.70/100,671.81 = 41,128.21/x
  3. Step 3: Cross multiply
    72,952.70x = 100,671.81 × 41,128.21
  4. Step 4: Simplify right side
    72,952.70x = 4,140,451,342.76
  5. Step 5: Solve for x
    x = 4,140,451,342.76/72,952.70
  6. Step 6: Final answer
    x = 56,755.29

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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.