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Finding the Fourth Proportional to 40,889,900.40, 61,282,751.40 and 21,729,836.40

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Solution

The fourth proportional to 40,889,900.40, 61,282,751.40 and 21,729,836.40 is: 32,567,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889,900.40 : 61,282,751.40 = 21,729,836.40 : x
  2. Step 2: Convert to fraction form
    40,889,900.40/61,282,751.40 = 21,729,836.40/x
  3. Step 3: Cross multiply
    40,889,900.40x = 61,282,751.40 × 21,729,836.40
  4. Step 4: Simplify right side
    40,889,900.40x = 1,331,664,162,063,870.75
  5. Step 5: Solve for x
    x = 1,331,664,162,063,870.75/40,889,900.40
  6. Step 6: Final answer
    x = 32,567,067.88

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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.