Home / 85,836.72-128,791.80-35,928.48

Finding the Fourth Proportional to 85,836.72, 128,791.80 and 35,928.48

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Solution

The fourth proportional to 85,836.72, 128,791.80 and 35,928.48 is: 53,908.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,836.72 : 128,791.80 = 35,928.48 : x
  2. Step 2: Convert to fraction form
    85,836.72/128,791.80 = 35,928.48/x
  3. Step 3: Cross multiply
    85,836.72x = 128,791.80 × 35,928.48
  4. Step 4: Simplify right side
    85,836.72x = 4,627,293,610.46
  5. Step 5: Solve for x
    x = 4,627,293,610.46/85,836.72
  6. Step 6: Final answer
    x = 53,908.09

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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.