Home / 56,745.10-78,310.36-31,252.54

Finding the Fourth Proportional to 56,745.10, 78,310.36 and 31,252.54

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Solution

The fourth proportional to 56,745.10, 78,310.36 and 31,252.54 is: 43,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,745.10 : 78,310.36 = 31,252.54 : x
  2. Step 2: Convert to fraction form
    56,745.10/78,310.36 = 31,252.54/x
  3. Step 3: Cross multiply
    56,745.10x = 78,310.36 × 31,252.54
  4. Step 4: Simplify right side
    56,745.10x = 2,447,397,658.31
  5. Step 5: Solve for x
    x = 2,447,397,658.31/56,745.10
  6. Step 6: Final answer
    x = 43,129.67

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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.