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Finding the Fourth Proportional to 69,978,628.80, 104,960,855.97 and 18,865,814.40

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Solution

The fourth proportional to 69,978,628.80, 104,960,855.97 and 18,865,814.40 is: 28,296,810.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,978,628.80 : 104,960,855.97 = 18,865,814.40 : x
  2. Step 2: Convert to fraction form
    69,978,628.80/104,960,855.97 = 18,865,814.40/x
  3. Step 3: Cross multiply
    69,978,628.80x = 104,960,855.97 × 18,865,814.40
  4. Step 4: Simplify right side
    69,978,628.80x = 1,980,172,027,995,151.75
  5. Step 5: Solve for x
    x = 1,980,172,027,995,151.75/69,978,628.80
  6. Step 6: Final answer
    x = 28,296,810.93

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Why These Related Problems?

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