Home / 81,005,743.23-111,775,900.21-49,199,361.36

Finding the Fourth Proportional to 81,005,743.23, 111,775,900.21 and 49,199,361.36

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Solution

The fourth proportional to 81,005,743.23, 111,775,900.21 and 49,199,361.36 is: 67,887,814.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005,743.23 : 111,775,900.21 = 49,199,361.36 : x
  2. Step 2: Convert to fraction form
    81,005,743.23/111,775,900.21 = 49,199,361.36/x
  3. Step 3: Cross multiply
    81,005,743.23x = 111,775,900.21 × 49,199,361.36
  4. Step 4: Simplify right side
    81,005,743.23x = 5,499,302,905,771,089
  5. Step 5: Solve for x
    x = 5,499,302,905,771,089/81,005,743.23
  6. Step 6: Final answer
    x = 67,887,814.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.