Home / 57,809.75-79,777.46-31,313.75

Finding the Fourth Proportional to 57,809.75, 79,777.46 and 31,313.75

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Solution

The fourth proportional to 57,809.75, 79,777.46 and 31,313.75 is: 43,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,809.75 : 79,777.46 = 31,313.75 : x
  2. Step 2: Convert to fraction form
    57,809.75/79,777.46 = 31,313.75/x
  3. Step 3: Cross multiply
    57,809.75x = 79,777.46 × 31,313.75
  4. Step 4: Simplify right side
    57,809.75x = 2,498,131,281.51
  5. Step 5: Solve for x
    x = 2,498,131,281.51/57,809.75
  6. Step 6: Final answer
    x = 43,212.98

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1.5x scale

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.