Home / 57,031.80-78,704.39-31,539.88

Finding the Fourth Proportional to 57,031.80, 78,704.39 and 31,539.88

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Solution

The fourth proportional to 57,031.80, 78,704.39 and 31,539.88 is: 43,525.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,031.80 : 78,704.39 = 31,539.88 : x
  2. Step 2: Convert to fraction form
    57,031.80/78,704.39 = 31,539.88/x
  3. Step 3: Cross multiply
    57,031.80x = 78,704.39 × 31,539.88
  4. Step 4: Simplify right side
    57,031.80x = 2,482,327,016.07
  5. Step 5: Solve for x
    x = 2,482,327,016.07/57,031.80
  6. Step 6: Final answer
    x = 43,525.31

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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.