Home / 85,914.36-128,889.99-25,937.79

Finding the Fourth Proportional to 85,914.36, 128,889.99 and 25,937.79

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Solution

The fourth proportional to 85,914.36, 128,889.99 and 25,937.79 is: 38,912.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,914.36 : 128,889.99 = 25,937.79 : x
  2. Step 2: Convert to fraction form
    85,914.36/128,889.99 = 25,937.79/x
  3. Step 3: Cross multiply
    85,914.36x = 128,889.99 × 25,937.79
  4. Step 4: Simplify right side
    85,914.36x = 3,343,121,493.72
  5. Step 5: Solve for x
    x = 3,343,121,493.72/85,914.36
  6. Step 6: Final answer
    x = 38,912.26

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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.