Home / 57,879.77-86,821.47-19,928.63

Finding the Fourth Proportional to 57,879.77, 86,821.47 and 19,928.63

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Solution

The fourth proportional to 57,879.77, 86,821.47 and 19,928.63 is: 29,893.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,879.77 : 86,821.47 = 19,928.63 : x
  2. Step 2: Convert to fraction form
    57,879.77/86,821.47 = 19,928.63/x
  3. Step 3: Cross multiply
    57,879.77x = 86,821.47 × 19,928.63
  4. Step 4: Simplify right side
    57,879.77x = 1,730,233,168.74
  5. Step 5: Solve for x
    x = 1,730,233,168.74/57,879.77
  6. Step 6: Final answer
    x = 29,893.58

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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.