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Finding the Fourth Proportional to 70,247.85, 105,371.19 and 30,295.08

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Solution

The fourth proportional to 70,247.85, 105,371.19 and 30,295.08 is: 45,442.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,247.85 : 105,371.19 = 30,295.08 : x
  2. Step 2: Convert to fraction form
    70,247.85/105,371.19 = 30,295.08/x
  3. Step 3: Cross multiply
    70,247.85x = 105,371.19 × 30,295.08
  4. Step 4: Simplify right side
    70,247.85x = 3,192,228,630.75
  5. Step 5: Solve for x
    x = 3,192,228,630.75/70,247.85
  6. Step 6: Final answer
    x = 45,442.37

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1.5x scale

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.