Home / 85,708.74-118,168.16-66,556.02

Finding the Fourth Proportional to 85,708.74, 118,168.16 and 66,556.02

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Solution

The fourth proportional to 85,708.74, 118,168.16 and 66,556.02 is: 91,761.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,708.74 : 118,168.16 = 66,556.02 : x
  2. Step 2: Convert to fraction form
    85,708.74/118,168.16 = 66,556.02/x
  3. Step 3: Cross multiply
    85,708.74x = 118,168.16 × 66,556.02
  4. Step 4: Simplify right side
    85,708.74x = 7,864,802,087.54
  5. Step 5: Solve for x
    x = 7,864,802,087.54/85,708.74
  6. Step 6: Final answer
    x = 91,761.96

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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.