Home / 57,221.46-78,964.20-31,727.93

Finding the Fourth Proportional to 57,221.46, 78,964.20 and 31,727.93

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Solution

The fourth proportional to 57,221.46, 78,964.20 and 31,727.93 is: 43,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,221.46 : 78,964.20 = 31,727.93 : x
  2. Step 2: Convert to fraction form
    57,221.46/78,964.20 = 31,727.93/x
  3. Step 3: Cross multiply
    57,221.46x = 78,964.20 × 31,727.93
  4. Step 4: Simplify right side
    57,221.46x = 2,505,370,215.29
  5. Step 5: Solve for x
    x = 2,505,370,215.29/57,221.46
  6. Step 6: Final answer
    x = 43,783.75

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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.