Home / 56,942.96-78,580.80-31,449.32

Finding the Fourth Proportional to 56,942.96, 78,580.80 and 31,449.32

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Solution

The fourth proportional to 56,942.96, 78,580.80 and 31,449.32 is: 43,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,942.96 : 78,580.80 = 31,449.32 : x
  2. Step 2: Convert to fraction form
    56,942.96/78,580.80 = 31,449.32/x
  3. Step 3: Cross multiply
    56,942.96x = 78,580.80 × 31,449.32
  4. Step 4: Simplify right side
    56,942.96x = 2,471,312,725.06
  5. Step 5: Solve for x
    x = 2,471,312,725.06/56,942.96
  6. Step 6: Final answer
    x = 43,399.79

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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.