Home / 56,923.90-78,554.61-31,431.85

Finding the Fourth Proportional to 56,923.90, 78,554.61 and 31,431.85

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Solution

The fourth proportional to 56,923.90, 78,554.61 and 31,431.85 is: 43,375.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,923.90 : 78,554.61 = 31,431.85 : x
  2. Step 2: Convert to fraction form
    56,923.90/78,554.61 = 31,431.85/x
  3. Step 3: Cross multiply
    56,923.90x = 78,554.61 × 31,431.85
  4. Step 4: Simplify right side
    56,923.90x = 2,469,116,521.94
  5. Step 5: Solve for x
    x = 2,469,116,521.94/56,923.90
  6. Step 6: Final answer
    x = 43,375.75

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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.