Home / 56,729.88-78,286.59-31,235.72

Finding the Fourth Proportional to 56,729.88, 78,286.59 and 31,235.72

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Solution

The fourth proportional to 56,729.88, 78,286.59 and 31,235.72 is: 43,104.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,729.88 : 78,286.59 = 31,235.72 : x
  2. Step 2: Convert to fraction form
    56,729.88/78,286.59 = 31,235.72/x
  3. Step 3: Cross multiply
    56,729.88x = 78,286.59 × 31,235.72
  4. Step 4: Simplify right side
    56,729.88x = 2,445,337,691.65
  5. Step 5: Solve for x
    x = 2,445,337,691.65/56,729.88
  6. Step 6: Final answer
    x = 43,104.93

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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.