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Finding the Fourth Proportional to 55,620, 76,757.22 and 30,471.12

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Solution

The fourth proportional to 55,620, 76,757.22 and 30,471.12 is: 42,051.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,620 : 76,757.22 = 30,471.12 : x
  2. Step 2: Convert to fraction form
    55,620/76,757.22 = 30,471.12/x
  3. Step 3: Cross multiply
    55,620x = 76,757.22 × 30,471.12
  4. Step 4: Simplify right side
    55,620x = 2,338,878,461.49
  5. Step 5: Solve for x
    x = 2,338,878,461.49/55,620
  6. Step 6: Final answer
    x = 42,051.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.