Home / 57,900.95-86,858.43-20,453.36

Finding the Fourth Proportional to 57,900.95, 86,858.43 and 20,453.36

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Solution

The fourth proportional to 57,900.95, 86,858.43 and 20,453.36 is: 30,682.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,900.95 : 86,858.43 = 20,453.36 : x
  2. Step 2: Convert to fraction form
    57,900.95/86,858.43 = 20,453.36/x
  3. Step 3: Cross multiply
    57,900.95x = 86,858.43 × 20,453.36
  4. Step 4: Simplify right side
    57,900.95x = 1,776,546,348.98
  5. Step 5: Solve for x
    x = 1,776,546,348.98/57,900.95
  6. Step 6: Final answer
    x = 30,682.51

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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.