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Finding the Fourth Proportional to 79,804,929.20, 119,707,393.80 and 43,399,252.40

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Solution

The fourth proportional to 79,804,929.20, 119,707,393.80 and 43,399,252.40 is: 65,098,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,804,929.20 : 119,707,393.80 = 43,399,252.40 : x
  2. Step 2: Convert to fraction form
    79,804,929.20/119,707,393.80 = 43,399,252.40/x
  3. Step 3: Cross multiply
    79,804,929.20x = 119,707,393.80 × 43,399,252.40
  4. Step 4: Simplify right side
    79,804,929.20x = 5,195,211,397,672,395
  5. Step 5: Solve for x
    x = 5,195,211,397,672,395/79,804,929.20
  6. Step 6: Final answer
    x = 65,098,878.60

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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.