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Finding the Fourth Proportional to 81,404,806.80, 122,071,780.80 and 26,796,291.60

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Solution

The fourth proportional to 81,404,806.80, 122,071,780.80 and 26,796,291.60 is: 40,182,774.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,404,806.80 : 122,071,780.80 = 26,796,291.60 : x
  2. Step 2: Convert to fraction form
    81,404,806.80/122,071,780.80 = 26,796,291.60/x
  3. Step 3: Cross multiply
    81,404,806.80x = 122,071,780.80 × 26,796,291.60
  4. Step 4: Simplify right side
    81,404,806.80x = 3,271,071,034,448,081.50
  5. Step 5: Solve for x
    x = 3,271,071,034,448,081.50/81,404,806.80
  6. Step 6: Final answer
    x = 40,182,774.99

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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.