Home / 80,918.69-111,708.77-62,729.33

Finding the Fourth Proportional to 80,918.69, 111,708.77 and 62,729.33

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Solution

The fourth proportional to 80,918.69, 111,708.77 and 62,729.33 is: 86,598.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,918.69 : 111,708.77 = 62,729.33 : x
  2. Step 2: Convert to fraction form
    80,918.69/111,708.77 = 62,729.33/x
  3. Step 3: Cross multiply
    80,918.69x = 111,708.77 × 62,729.33
  4. Step 4: Simplify right side
    80,918.69x = 7,007,415,425.03
  5. Step 5: Solve for x
    x = 7,007,415,425.03/80,918.69
  6. Step 6: Final answer
    x = 86,598.24

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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.