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Finding the Fourth Proportional to 87,364, 120,562.32 and 47,622.56

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Solution

The fourth proportional to 87,364, 120,562.32 and 47,622.56 is: 65,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,364 : 120,562.32 = 47,622.56 : x
  2. Step 2: Convert to fraction form
    87,364/120,562.32 = 47,622.56/x
  3. Step 3: Cross multiply
    87,364x = 120,562.32 × 47,622.56
  4. Step 4: Simplify right side
    87,364x = 5,741,486,317.94
  5. Step 5: Solve for x
    x = 5,741,486,317.94/87,364
  6. Step 6: Final answer
    x = 65,719.13

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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.