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Finding the Fourth Proportional to 86,120.88, 118,851.78 and 48,397.56

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Solution

The fourth proportional to 86,120.88, 118,851.78 and 48,397.56 is: 66,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.88 : 118,851.78 = 48,397.56 : x
  2. Step 2: Convert to fraction form
    86,120.88/118,851.78 = 48,397.56/x
  3. Step 3: Cross multiply
    86,120.88x = 118,851.78 × 48,397.56
  4. Step 4: Simplify right side
    86,120.88x = 5,752,136,153.66
  5. Step 5: Solve for x
    x = 5,752,136,153.66/86,120.88
  6. Step 6: Final answer
    x = 66,791.42

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1.5x scale

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.