Home / 57,980.40-86,969.24-18,537.86

Finding the Fourth Proportional to 57,980.40, 86,969.24 and 18,537.86

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Solution

The fourth proportional to 57,980.40, 86,969.24 and 18,537.86 is: 27,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,980.40 : 86,969.24 = 18,537.86 : x
  2. Step 2: Convert to fraction form
    57,980.40/86,969.24 = 18,537.86/x
  3. Step 3: Cross multiply
    57,980.40x = 86,969.24 × 18,537.86
  4. Step 4: Simplify right side
    57,980.40x = 1,612,223,067.89
  5. Step 5: Solve for x
    x = 1,612,223,067.89/57,980.40
  6. Step 6: Final answer
    x = 27,806.35

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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.