Home / 56,940.96-78,578.04-31,447.32

Finding the Fourth Proportional to 56,940.96, 78,578.04 and 31,447.32

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Solution

The fourth proportional to 56,940.96, 78,578.04 and 31,447.32 is: 43,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.96 : 78,578.04 = 31,447.32 : x
  2. Step 2: Convert to fraction form
    56,940.96/78,578.04 = 31,447.32/x
  3. Step 3: Cross multiply
    56,940.96x = 78,578.04 × 31,447.32
  4. Step 4: Simplify right side
    56,940.96x = 2,471,068,768.85
  5. Step 5: Solve for x
    x = 2,471,068,768.85/56,940.96
  6. Step 6: Final answer
    x = 43,397.03

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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.