Home / 57,072.26-78,762.03-31,578.21

Finding the Fourth Proportional to 57,072.26, 78,762.03 and 31,578.21

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Solution

The fourth proportional to 57,072.26, 78,762.03 and 31,578.21 is: 43,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,072.26 : 78,762.03 = 31,578.21 : x
  2. Step 2: Convert to fraction form
    57,072.26/78,762.03 = 31,578.21/x
  3. Step 3: Cross multiply
    57,072.26x = 78,762.03 × 31,578.21
  4. Step 4: Simplify right side
    57,072.26x = 2,487,163,529.56
  5. Step 5: Solve for x
    x = 2,487,163,529.56/57,072.26
  6. Step 6: Final answer
    x = 43,579.21

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1.5x scale

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.