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Finding the Fourth Proportional to 87,444, 120,653.28 and 51,635.52

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Solution

The fourth proportional to 87,444, 120,653.28 and 51,635.52 is: 71,245.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,444 : 120,653.28 = 51,635.52 : x
  2. Step 2: Convert to fraction form
    87,444/120,653.28 = 51,635.52/x
  3. Step 3: Cross multiply
    87,444x = 120,653.28 × 51,635.52
  4. Step 4: Simplify right side
    87,444x = 6,229,994,852.51
  5. Step 5: Solve for x
    x = 6,229,994,852.51/87,444
  6. Step 6: Final answer
    x = 71,245.54

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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.