Home / 85,828.05-128,777.64-46,338.75

Finding the Fourth Proportional to 85,828.05, 128,777.64 and 46,338.75

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Solution

The fourth proportional to 85,828.05, 128,777.64 and 46,338.75 is: 69,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,828.05 : 128,777.64 = 46,338.75 : x
  2. Step 2: Convert to fraction form
    85,828.05/128,777.64 = 46,338.75/x
  3. Step 3: Cross multiply
    85,828.05x = 128,777.64 × 46,338.75
  4. Step 4: Simplify right side
    85,828.05x = 5,967,394,865.55
  5. Step 5: Solve for x
    x = 5,967,394,865.55/85,828.05
  6. Step 6: Final answer
    x = 69,527.33

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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.