Home / 57,220.90-78,949-33,020.18

Finding the Fourth Proportional to 57,220.90, 78,949 and 33,020.18

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Solution

The fourth proportional to 57,220.90, 78,949 and 33,020.18 is: 45,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,220.90 : 78,949 = 33,020.18 : x
  2. Step 2: Convert to fraction form
    57,220.90/78,949 = 33,020.18/x
  3. Step 3: Cross multiply
    57,220.90x = 78,949 × 33,020.18
  4. Step 4: Simplify right side
    57,220.90x = 2,606,910,190.82
  5. Step 5: Solve for x
    x = 2,606,910,190.82/57,220.90
  6. Step 6: Final answer
    x = 45,558.71

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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.