Home / 30,405,119.31-41,963,239.08-18,642,306.87

Finding the Fourth Proportional to 30,405,119.31, 41,963,239.08 and 18,642,306.87

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Solution

The fourth proportional to 30,405,119.31, 41,963,239.08 and 18,642,306.87 is: 25,728,942.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,405,119.31 : 41,963,239.08 = 18,642,306.87 : x
  2. Step 2: Convert to fraction form
    30,405,119.31/41,963,239.08 = 18,642,306.87/x
  3. Step 3: Cross multiply
    30,405,119.31x = 41,963,239.08 × 18,642,306.87
  4. Step 4: Simplify right side
    30,405,119.31x = 782,291,580,188,536.50
  5. Step 5: Solve for x
    x = 782,291,580,188,536.50/30,405,119.31
  6. Step 6: Final answer
    x = 25,728,942.95

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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.