Home / 85,812.98-128,738.19-35,895.38

Finding the Fourth Proportional to 85,812.98, 128,738.19 and 35,895.38

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Solution

The fourth proportional to 85,812.98, 128,738.19 and 35,895.38 is: 53,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812.98 : 128,738.19 = 35,895.38 : x
  2. Step 2: Convert to fraction form
    85,812.98/128,738.19 = 35,895.38/x
  3. Step 3: Cross multiply
    85,812.98x = 128,738.19 × 35,895.38
  4. Step 4: Simplify right side
    85,812.98x = 4,621,106,250.56
  5. Step 5: Solve for x
    x = 4,621,106,250.56/85,812.98
  6. Step 6: Final answer
    x = 53,850.90

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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.