Home / 85,450.23-128,255.76-43,360.52

Finding the Fourth Proportional to 85,450.23, 128,255.76 and 43,360.52

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Solution

The fourth proportional to 85,450.23, 128,255.76 and 43,360.52 is: 65,081.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.23 : 128,255.76 = 43,360.52 : x
  2. Step 2: Convert to fraction form
    85,450.23/128,255.76 = 43,360.52/x
  3. Step 3: Cross multiply
    85,450.23x = 128,255.76 × 43,360.52
  4. Step 4: Simplify right side
    85,450.23x = 5,561,235,805.32
  5. Step 5: Solve for x
    x = 5,561,235,805.32/85,450.23
  6. Step 6: Final answer
    x = 65,081.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.