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Finding the Fourth Proportional to 86,121.84, 118,851.66 and 48,396

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Solution

The fourth proportional to 86,121.84, 118,851.66 and 48,396 is: 66,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,121.84 : 118,851.66 = 48,396 : x
  2. Step 2: Convert to fraction form
    86,121.84/118,851.66 = 48,396/x
  3. Step 3: Cross multiply
    86,121.84x = 118,851.66 × 48,396
  4. Step 4: Simplify right side
    86,121.84x = 5,751,944,937.36
  5. Step 5: Solve for x
    x = 5,751,944,937.36/86,121.84
  6. Step 6: Final answer
    x = 66,788.46

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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.