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Finding the Fourth Proportional to 70,563.52, 105,816.08 and 30,019.84

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Solution

The fourth proportional to 70,563.52, 105,816.08 and 30,019.84 is: 45,017.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,563.52 : 105,816.08 = 30,019.84 : x
  2. Step 2: Convert to fraction form
    70,563.52/105,816.08 = 30,019.84/x
  3. Step 3: Cross multiply
    70,563.52x = 105,816.08 × 30,019.84
  4. Step 4: Simplify right side
    70,563.52x = 3,176,581,791.03
  5. Step 5: Solve for x
    x = 3,176,581,791.03/70,563.52
  6. Step 6: Final answer
    x = 45,017.34

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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.