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Finding the Fourth Proportional to 79,788,071.52, 119,682,140.09 and 19,203,797.52

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Solution

The fourth proportional to 79,788,071.52, 119,682,140.09 and 19,203,797.52 is: 28,805,704.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,788,071.52 : 119,682,140.09 = 19,203,797.52 : x
  2. Step 2: Convert to fraction form
    79,788,071.52/119,682,140.09 = 19,203,797.52/x
  3. Step 3: Cross multiply
    79,788,071.52x = 119,682,140.09 × 19,203,797.52
  4. Step 4: Simplify right side
    79,788,071.52x = 2,298,351,584,952,615.50
  5. Step 5: Solve for x
    x = 2,298,351,584,952,615.50/79,788,071.52
  6. Step 6: Final answer
    x = 28,805,704.18

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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.