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Finding the Fourth Proportional to 53,309,797.62, 79,964,697.04 and 12,920,281.62

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Solution

The fourth proportional to 53,309,797.62, 79,964,697.04 and 12,920,281.62 is: 19,380,422.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,309,797.62 : 79,964,697.04 = 12,920,281.62 : x
  2. Step 2: Convert to fraction form
    53,309,797.62/79,964,697.04 = 12,920,281.62/x
  3. Step 3: Cross multiply
    53,309,797.62x = 79,964,697.04 × 12,920,281.62
  4. Step 4: Simplify right side
    53,309,797.62x = 1,033,166,405,414,780.38
  5. Step 5: Solve for x
    x = 1,033,166,405,414,780.38/53,309,797.62
  6. Step 6: Final answer
    x = 19,380,422.58

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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.