Home / 85,323.57-128,004.03-26,163.87

Finding the Fourth Proportional to 85,323.57, 128,004.03 and 26,163.87

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Solution

The fourth proportional to 85,323.57, 128,004.03 and 26,163.87 is: 39,251.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,323.57 : 128,004.03 = 26,163.87 : x
  2. Step 2: Convert to fraction form
    85,323.57/128,004.03 = 26,163.87/x
  3. Step 3: Cross multiply
    85,323.57x = 128,004.03 × 26,163.87
  4. Step 4: Simplify right side
    85,323.57x = 3,349,080,800.40
  5. Step 5: Solve for x
    x = 3,349,080,800.40/85,323.57
  6. Step 6: Final answer
    x = 39,251.53

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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.