Home / 85,427.87-128,093.81-35,474.36

Finding the Fourth Proportional to 85,427.87, 128,093.81 and 35,474.36

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Solution

The fourth proportional to 85,427.87, 128,093.81 and 35,474.36 is: 53,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,427.87 : 128,093.81 = 35,474.36 : x
  2. Step 2: Convert to fraction form
    85,427.87/128,093.81 = 35,474.36/x
  3. Step 3: Cross multiply
    85,427.87x = 128,093.81 × 35,474.36
  4. Step 4: Simplify right side
    85,427.87x = 4,544,045,111.87
  5. Step 5: Solve for x
    x = 4,544,045,111.87/85,427.87
  6. Step 6: Final answer
    x = 53,191.60

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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.