Home / 57,307.05-85,986.36-30,980.97

Finding the Fourth Proportional to 57,307.05, 85,986.36 and 30,980.97

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Solution

The fourth proportional to 57,307.05, 85,986.36 and 30,980.97 is: 46,485.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,307.05 : 85,986.36 = 30,980.97 : x
  2. Step 2: Convert to fraction form
    57,307.05/85,986.36 = 30,980.97/x
  3. Step 3: Cross multiply
    57,307.05x = 85,986.36 × 30,980.97
  4. Step 4: Simplify right side
    57,307.05x = 2,663,940,839.57
  5. Step 5: Solve for x
    x = 2,663,940,839.57/57,307.05
  6. Step 6: Final answer
    x = 46,485.39

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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.