Home / 57,811.56-79,779.96-31,315.56

Finding the Fourth Proportional to 57,811.56, 79,779.96 and 31,315.56

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Solution

The fourth proportional to 57,811.56, 79,779.96 and 31,315.56 is: 43,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,811.56 : 79,779.96 = 31,315.56 : x
  2. Step 2: Convert to fraction form
    57,811.56/79,779.96 = 31,315.56/x
  3. Step 3: Cross multiply
    57,811.56x = 79,779.96 × 31,315.56
  4. Step 4: Simplify right side
    57,811.56x = 2,498,354,124.18
  5. Step 5: Solve for x
    x = 2,498,354,124.18/57,811.56
  6. Step 6: Final answer
    x = 43,215.48

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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.