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Finding the Fourth Proportional to 70,246.85, 105,369.69 and 30,294.08

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Solution

The fourth proportional to 70,246.85, 105,369.69 and 30,294.08 is: 45,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,246.85 : 105,369.69 = 30,294.08 : x
  2. Step 2: Convert to fraction form
    70,246.85/105,369.69 = 30,294.08/x
  3. Step 3: Cross multiply
    70,246.85x = 105,369.69 × 30,294.08
  4. Step 4: Simplify right side
    70,246.85x = 3,192,077,800.33
  5. Step 5: Solve for x
    x = 3,192,077,800.33/70,246.85
  6. Step 6: Final answer
    x = 45,440.87

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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.