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Finding the Fourth Proportional to 86,085.58, 129,054.41 and 29,918.39

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Solution

The fourth proportional to 86,085.58, 129,054.41 and 29,918.39 is: 44,851.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,085.58 : 129,054.41 = 29,918.39 : x
  2. Step 2: Convert to fraction form
    86,085.58/129,054.41 = 29,918.39/x
  3. Step 3: Cross multiply
    86,085.58x = 129,054.41 × 29,918.39
  4. Step 4: Simplify right side
    86,085.58x = 3,861,100,244.40
  5. Step 5: Solve for x
    x = 3,861,100,244.40/86,085.58
  6. Step 6: Final answer
    x = 44,851.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.