Home / 78,633,735.29-117,967,629.12-30,111,590.82

Finding the Fourth Proportional to 78,633,735.29, 117,967,629.12 and 30,111,590.82

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Solution

The fourth proportional to 78,633,735.29, 117,967,629.12 and 30,111,590.82 is: 45,173,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,633,735.29 : 117,967,629.12 = 30,111,590.82 : x
  2. Step 2: Convert to fraction form
    78,633,735.29/117,967,629.12 = 30,111,590.82/x
  3. Step 3: Cross multiply
    78,633,735.29x = 117,967,629.12 × 30,111,590.82
  4. Step 4: Simplify right side
    78,633,735.29x = 3,552,192,978,066,957
  5. Step 5: Solve for x
    x = 3,552,192,978,066,957/78,633,735.29
  6. Step 6: Final answer
    x = 45,173,906.15

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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.