Home / 87,772.82-121,126.43-47,486.60

Finding the Fourth Proportional to 87,772.82, 121,126.43 and 47,486.60

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Solution

The fourth proportional to 87,772.82, 121,126.43 and 47,486.60 is: 65,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,772.82 : 121,126.43 = 47,486.60 : x
  2. Step 2: Convert to fraction form
    87,772.82/121,126.43 = 47,486.60/x
  3. Step 3: Cross multiply
    87,772.82x = 121,126.43 × 47,486.60
  4. Step 4: Simplify right side
    87,772.82x = 5,751,881,725.21
  5. Step 5: Solve for x
    x = 5,751,881,725.21/87,772.82
  6. Step 6: Final answer
    x = 65,531.47

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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.