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Finding the Fourth Proportional to 55,605.60, 76,735.71 and 30,455.10

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Solution

The fourth proportional to 55,605.60, 76,735.71 and 30,455.10 is: 42,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,605.60 : 76,735.71 = 30,455.10 : x
  2. Step 2: Convert to fraction form
    55,605.60/76,735.71 = 30,455.10/x
  3. Step 3: Cross multiply
    55,605.60x = 76,735.71 × 30,455.10
  4. Step 4: Simplify right side
    55,605.60x = 2,336,993,721.62
  5. Step 5: Solve for x
    x = 2,336,993,721.62/55,605.60
  6. Step 6: Final answer
    x = 42,028.03

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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.