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Finding the Fourth Proportional to 66,034,866.40, 99,066,296.40 and 19,972,952.80

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Solution

The fourth proportional to 66,034,866.40, 99,066,296.40 and 19,972,952.80 is: 29,963,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,034,866.40 : 99,066,296.40 = 19,972,952.80 : x
  2. Step 2: Convert to fraction form
    66,034,866.40/99,066,296.40 = 19,972,952.80/x
  3. Step 3: Cross multiply
    66,034,866.40x = 99,066,296.40 × 19,972,952.80
  4. Step 4: Simplify right side
    66,034,866.40x = 1,978,646,462,068,010
  5. Step 5: Solve for x
    x = 1,978,646,462,068,010/66,034,866.40
  6. Step 6: Final answer
    x = 29,963,662.68

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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.