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Finding the Fourth Proportional to 69,980,687.10, 104,959,068.84 and 18,850,748.40

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Solution

The fourth proportional to 69,980,687.10, 104,959,068.84 and 18,850,748.40 is: 28,272,900.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,980,687.10 : 104,959,068.84 = 18,850,748.40 : x
  2. Step 2: Convert to fraction form
    69,980,687.10/104,959,068.84 = 18,850,748.40/x
  3. Step 3: Cross multiply
    69,980,687.10x = 104,959,068.84 × 18,850,748.40
  4. Step 4: Simplify right side
    69,980,687.10x = 1,978,556,999,001,119.75
  5. Step 5: Solve for x
    x = 1,978,556,999,001,119.75/69,980,687.10
  6. Step 6: Final answer
    x = 28,272,900.44

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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.