Home / 85,501.44-128,022.12-55,845.72

Finding the Fourth Proportional to 85,501.44, 128,022.12 and 55,845.72

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Solution

The fourth proportional to 85,501.44, 128,022.12 and 55,845.72 is: 83,618.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.44 : 128,022.12 = 55,845.72 : x
  2. Step 2: Convert to fraction form
    85,501.44/128,022.12 = 55,845.72/x
  3. Step 3: Cross multiply
    85,501.44x = 128,022.12 × 55,845.72
  4. Step 4: Simplify right side
    85,501.44x = 7,149,487,467.33
  5. Step 5: Solve for x
    x = 7,149,487,467.33/85,501.44
  6. Step 6: Final answer
    x = 83,618.33

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1.5x scale

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.