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Finding the Fourth Proportional to 70,561.52, 105,813.08 and 30,017.84

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Solution

The fourth proportional to 70,561.52, 105,813.08 and 30,017.84 is: 45,014.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,561.52 : 105,813.08 = 30,017.84 : x
  2. Step 2: Convert to fraction form
    70,561.52/105,813.08 = 30,017.84/x
  3. Step 3: Cross multiply
    70,561.52x = 105,813.08 × 30,017.84
  4. Step 4: Simplify right side
    70,561.52x = 3,176,280,105.35
  5. Step 5: Solve for x
    x = 3,176,280,105.35/70,561.52
  6. Step 6: Final answer
    x = 45,014.34

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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.