Home / 78,727,564.82-118,077,887.46-21,206,383.58

Finding the Fourth Proportional to 78,727,564.82, 118,077,887.46 and 21,206,383.58

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Solution

The fourth proportional to 78,727,564.82, 118,077,887.46 and 21,206,383.58 is: 31,805,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727,564.82 : 118,077,887.46 = 21,206,383.58 : x
  2. Step 2: Convert to fraction form
    78,727,564.82/118,077,887.46 = 21,206,383.58/x
  3. Step 3: Cross multiply
    78,727,564.82x = 118,077,887.46 × 21,206,383.58
  4. Step 4: Simplify right side
    78,727,564.82x = 2,504,004,973,792,831.50
  5. Step 5: Solve for x
    x = 2,504,004,973,792,831.50/78,727,564.82
  6. Step 6: Final answer
    x = 31,805,949.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.