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Finding the Fourth Proportional to 55,620.96, 83,443.92 and 18,684

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Solution

The fourth proportional to 55,620.96, 83,443.92 and 18,684 is: 28,030.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,620.96 : 83,443.92 = 18,684 : x
  2. Step 2: Convert to fraction form
    55,620.96/83,443.92 = 18,684/x
  3. Step 3: Cross multiply
    55,620.96x = 83,443.92 × 18,684
  4. Step 4: Simplify right side
    55,620.96x = 1,559,066,201.28
  5. Step 5: Solve for x
    x = 1,559,066,201.28/55,620.96
  6. Step 6: Final answer
    x = 28,030.19

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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.