Home / 85,716.21-128,594.70-35,768.55

Finding the Fourth Proportional to 85,716.21, 128,594.70 and 35,768.55

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Solution

The fourth proportional to 85,716.21, 128,594.70 and 35,768.55 is: 53,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,716.21 : 128,594.70 = 35,768.55 : x
  2. Step 2: Convert to fraction form
    85,716.21/128,594.70 = 35,768.55/x
  3. Step 3: Cross multiply
    85,716.21x = 128,594.70 × 35,768.55
  4. Step 4: Simplify right side
    85,716.21x = 4,599,645,956.69
  5. Step 5: Solve for x
    x = 4,599,645,956.69/85,716.21
  6. Step 6: Final answer
    x = 53,661.33

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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.