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Finding the Fourth Proportional to 53,900.56, 80,848.14 and 20,636.56

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Solution

The fourth proportional to 53,900.56, 80,848.14 and 20,636.56 is: 30,953.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,900.56 : 80,848.14 = 20,636.56 : x
  2. Step 2: Convert to fraction form
    53,900.56/80,848.14 = 20,636.56/x
  3. Step 3: Cross multiply
    53,900.56x = 80,848.14 × 20,636.56
  4. Step 4: Simplify right side
    53,900.56x = 1,668,427,492.00
  5. Step 5: Solve for x
    x = 1,668,427,492.00/53,900.56
  6. Step 6: Final answer
    x = 30,953.81

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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.