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Finding the Fourth Proportional to 86,081.93, 118,792.94 and 47,840.28

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Solution

The fourth proportional to 86,081.93, 118,792.94 and 47,840.28 is: 66,019.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,081.93 : 118,792.94 = 47,840.28 : x
  2. Step 2: Convert to fraction form
    86,081.93/118,792.94 = 47,840.28/x
  3. Step 3: Cross multiply
    86,081.93x = 118,792.94 × 47,840.28
  4. Step 4: Simplify right side
    86,081.93x = 5,683,086,917.66
  5. Step 5: Solve for x
    x = 5,683,086,917.66/86,081.93
  6. Step 6: Final answer
    x = 66,019.51

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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.