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Finding the Fourth Proportional to 86,172.57, 118,918.13 and 48,447.09

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Solution

The fourth proportional to 86,172.57, 118,918.13 and 48,447.09 is: 66,856.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,172.57 : 118,918.13 = 48,447.09 : x
  2. Step 2: Convert to fraction form
    86,172.57/118,918.13 = 48,447.09/x
  3. Step 3: Cross multiply
    86,172.57x = 118,918.13 × 48,447.09
  4. Step 4: Simplify right side
    86,172.57x = 5,761,237,346.74
  5. Step 5: Solve for x
    x = 5,761,237,346.74/86,172.57
  6. Step 6: Final answer
    x = 66,856.97

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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.