Home / 78,150,237.30-117,230,954.67-20,641,935.06

Finding the Fourth Proportional to 78,150,237.30, 117,230,954.67 and 20,641,935.06

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Solution

The fourth proportional to 78,150,237.30, 117,230,954.67 and 20,641,935.06 is: 30,964,381.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,150,237.30 : 117,230,954.67 = 20,641,935.06 : x
  2. Step 2: Convert to fraction form
    78,150,237.30/117,230,954.67 = 20,641,935.06/x
  3. Step 3: Cross multiply
    78,150,237.30x = 117,230,954.67 × 20,641,935.06
  4. Step 4: Simplify right side
    78,150,237.30x = 2,419,873,753,319,943.50
  5. Step 5: Solve for x
    x = 2,419,873,753,319,943.50/78,150,237.30
  6. Step 6: Final answer
    x = 30,964,381.39

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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.