Home / 78,390,010.80-117,585,016.20-27,272,029.61

Finding the Fourth Proportional to 78,390,010.80, 117,585,016.20 and 27,272,029.61

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Solution

The fourth proportional to 78,390,010.80, 117,585,016.20 and 27,272,029.61 is: 40,908,044.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,390,010.80 : 117,585,016.20 = 27,272,029.61 : x
  2. Step 2: Convert to fraction form
    78,390,010.80/117,585,016.20 = 27,272,029.61/x
  3. Step 3: Cross multiply
    78,390,010.80x = 117,585,016.20 × 27,272,029.61
  4. Step 4: Simplify right side
    78,390,010.80x = 3,206,782,043,792,692.50
  5. Step 5: Solve for x
    x = 3,206,782,043,792,692.50/78,390,010.80
  6. Step 6: Final answer
    x = 40,908,044.42

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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.