Home / 57,240.57-78,900.99-45,121.40

Finding the Fourth Proportional to 57,240.57, 78,900.99 and 45,121.40

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Solution

The fourth proportional to 57,240.57, 78,900.99 and 45,121.40 is: 62,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,240.57 : 78,900.99 = 45,121.40 : x
  2. Step 2: Convert to fraction form
    57,240.57/78,900.99 = 45,121.40/x
  3. Step 3: Cross multiply
    57,240.57x = 78,900.99 × 45,121.40
  4. Step 4: Simplify right side
    57,240.57x = 3,560,122,707.33
  5. Step 5: Solve for x
    x = 3,560,122,707.33/57,240.57
  6. Step 6: Final answer
    x = 62,195.80

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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.