Home / 86,972.16-119,999.97-55,129.44

Finding the Fourth Proportional to 86,972.16, 119,999.97 and 55,129.44

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Solution

The fourth proportional to 86,972.16, 119,999.97 and 55,129.44 is: 76,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972.16 : 119,999.97 = 55,129.44 : x
  2. Step 2: Convert to fraction form
    86,972.16/119,999.97 = 55,129.44/x
  3. Step 3: Cross multiply
    86,972.16x = 119,999.97 × 55,129.44
  4. Step 4: Simplify right side
    86,972.16x = 6,615,531,146.12
  5. Step 5: Solve for x
    x = 6,615,531,146.12/86,972.16
  6. Step 6: Final answer
    x = 76,064.93

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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.