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Finding the Fourth Proportional to 53,610, 80,404.04 and 20,318.60

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Solution

The fourth proportional to 53,610, 80,404.04 and 20,318.60 is: 30,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,610 : 80,404.04 = 20,318.60 : x
  2. Step 2: Convert to fraction form
    53,610/80,404.04 = 20,318.60/x
  3. Step 3: Cross multiply
    53,610x = 80,404.04 × 20,318.60
  4. Step 4: Simplify right side
    53,610x = 1,633,697,527.14
  5. Step 5: Solve for x
    x = 1,633,697,527.14/53,610
  6. Step 6: Final answer
    x = 30,473.75

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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.