Home / 57,579.21-86,371.89-18,139.41

Finding the Fourth Proportional to 57,579.21, 86,371.89 and 18,139.41

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Solution

The fourth proportional to 57,579.21, 86,371.89 and 18,139.41 is: 27,210.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,579.21 : 86,371.89 = 18,139.41 : x
  2. Step 2: Convert to fraction form
    57,579.21/86,371.89 = 18,139.41/x
  3. Step 3: Cross multiply
    57,579.21x = 86,371.89 × 18,139.41
  4. Step 4: Simplify right side
    57,579.21x = 1,566,735,125.18
  5. Step 5: Solve for x
    x = 1,566,735,125.18/57,579.21
  6. Step 6: Final answer
    x = 27,210.08

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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.