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Finding the Fourth Proportional to 70,233.70, 105,257.58 and 36,885.60

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Solution

The fourth proportional to 70,233.70, 105,257.58 and 36,885.60 is: 55,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,233.70 : 105,257.58 = 36,885.60 : x
  2. Step 2: Convert to fraction form
    70,233.70/105,257.58 = 36,885.60/x
  3. Step 3: Cross multiply
    70,233.70x = 105,257.58 × 36,885.60
  4. Step 4: Simplify right side
    70,233.70x = 3,882,488,992.85
  5. Step 5: Solve for x
    x = 3,882,488,992.85/70,233.70
  6. Step 6: Final answer
    x = 55,279.57

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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.