Home / 57,231.86-78,977.77-31,739.27

Finding the Fourth Proportional to 57,231.86, 78,977.77 and 31,739.27

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Solution

The fourth proportional to 57,231.86, 78,977.77 and 31,739.27 is: 43,798.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,231.86 : 78,977.77 = 31,739.27 : x
  2. Step 2: Convert to fraction form
    57,231.86/78,977.77 = 31,739.27/x
  3. Step 3: Cross multiply
    57,231.86x = 78,977.77 × 31,739.27
  4. Step 4: Simplify right side
    57,231.86x = 2,506,696,291.79
  5. Step 5: Solve for x
    x = 2,506,696,291.79/57,231.86
  6. Step 6: Final answer
    x = 43,798.97

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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.