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Finding the Fourth Proportional to 86,129.36, 118,857.48 and 48,410

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Solution

The fourth proportional to 86,129.36, 118,857.48 and 48,410 is: 66,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,129.36 : 118,857.48 = 48,410 : x
  2. Step 2: Convert to fraction form
    86,129.36/118,857.48 = 48,410/x
  3. Step 3: Cross multiply
    86,129.36x = 118,857.48 × 48,410
  4. Step 4: Simplify right side
    86,129.36x = 5,753,890,606.80
  5. Step 5: Solve for x
    x = 5,753,890,606.80/86,129.36
  6. Step 6: Final answer
    x = 66,805.22

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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.