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Finding the Fourth Proportional to 55,066.80, 82,603.34 and 15,620.82

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Solution

The fourth proportional to 55,066.80, 82,603.34 and 15,620.82 is: 23,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,066.80 : 82,603.34 = 15,620.82 : x
  2. Step 2: Convert to fraction form
    55,066.80/82,603.34 = 15,620.82/x
  3. Step 3: Cross multiply
    55,066.80x = 82,603.34 × 15,620.82
  4. Step 4: Simplify right side
    55,066.80x = 1,290,331,905.54
  5. Step 5: Solve for x
    x = 1,290,331,905.54/55,066.80
  6. Step 6: Final answer
    x = 23,432.12

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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.