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Finding the Fourth Proportional to 87,772.88, 121,126.44 and 47,486.54

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Solution

The fourth proportional to 87,772.88, 121,126.44 and 47,486.54 is: 65,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,772.88 : 121,126.44 = 47,486.54 : x
  2. Step 2: Convert to fraction form
    87,772.88/121,126.44 = 47,486.54/x
  3. Step 3: Cross multiply
    87,772.88x = 121,126.44 × 47,486.54
  4. Step 4: Simplify right side
    87,772.88x = 5,751,875,538.12
  5. Step 5: Solve for x
    x = 5,751,875,538.12/87,772.88
  6. Step 6: Final answer
    x = 65,531.35

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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.