Home / 56,640.26-78,165.53-31,147.67

Finding the Fourth Proportional to 56,640.26, 78,165.53 and 31,147.67

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Solution

The fourth proportional to 56,640.26, 78,165.53 and 31,147.67 is: 42,984.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,640.26 : 78,165.53 = 31,147.67 : x
  2. Step 2: Convert to fraction form
    56,640.26/78,165.53 = 31,147.67/x
  3. Step 3: Cross multiply
    56,640.26x = 78,165.53 × 31,147.67
  4. Step 4: Simplify right side
    56,640.26x = 2,434,673,587.25
  5. Step 5: Solve for x
    x = 2,434,673,587.25/56,640.26
  6. Step 6: Final answer
    x = 42,984.86

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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.