Home / 56,912.09-78,539.33-31,418.47

Finding the Fourth Proportional to 56,912.09, 78,539.33 and 31,418.47

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Solution

The fourth proportional to 56,912.09, 78,539.33 and 31,418.47 is: 43,357.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,912.09 : 78,539.33 = 31,418.47 : x
  2. Step 2: Convert to fraction form
    56,912.09/78,539.33 = 31,418.47/x
  3. Step 3: Cross multiply
    56,912.09x = 78,539.33 × 31,418.47
  4. Step 4: Simplify right side
    56,912.09x = 2,467,585,583.42
  5. Step 5: Solve for x
    x = 2,467,585,583.42/56,912.09
  6. Step 6: Final answer
    x = 43,357.84

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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.