Home / 57,211.80-78,956.94-31,726.15

Finding the Fourth Proportional to 57,211.80, 78,956.94 and 31,726.15

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Solution

The fourth proportional to 57,211.80, 78,956.94 and 31,726.15 is: 43,784.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,211.80 : 78,956.94 = 31,726.15 : x
  2. Step 2: Convert to fraction form
    57,211.80/78,956.94 = 31,726.15/x
  3. Step 3: Cross multiply
    57,211.80x = 78,956.94 × 31,726.15
  4. Step 4: Simplify right side
    57,211.80x = 2,504,999,643.56
  5. Step 5: Solve for x
    x = 2,504,999,643.56/57,211.80
  6. Step 6: Final answer
    x = 43,784.67

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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.