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Finding the Fourth Proportional to 57,804.54, 86,713.76 and 20,356.88

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Solution

The fourth proportional to 57,804.54, 86,713.76 and 20,356.88 is: 30,537.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,804.54 : 86,713.76 = 20,356.88 : x
  2. Step 2: Convert to fraction form
    57,804.54/86,713.76 = 20,356.88/x
  3. Step 3: Cross multiply
    57,804.54x = 86,713.76 × 20,356.88
  4. Step 4: Simplify right side
    57,804.54x = 1,765,221,071.32
  5. Step 5: Solve for x
    x = 1,765,221,071.32/57,804.54
  6. Step 6: Final answer
    x = 30,537.76

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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.