Home / 72,405,959.80-108,598,442.10-21,282,647.80

Finding the Fourth Proportional to 72,405,959.80, 108,598,442.10 and 21,282,647.80

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Solution

The fourth proportional to 72,405,959.80, 108,598,442.10 and 21,282,647.80 is: 31,920,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,405,959.80 : 108,598,442.10 = 21,282,647.80 : x
  2. Step 2: Convert to fraction form
    72,405,959.80/108,598,442.10 = 21,282,647.80/x
  3. Step 3: Cross multiply
    72,405,959.80x = 108,598,442.10 × 21,282,647.80
  4. Step 4: Simplify right side
    72,405,959.80x = 2,311,262,394,842,992.50
  5. Step 5: Solve for x
    x = 2,311,262,394,842,992.50/72,405,959.80
  6. Step 6: Final answer
    x = 31,920,886.09

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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.