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Finding the Fourth Proportional to 71,169.57, 98,214.53 and 39,339.41

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Solution

The fourth proportional to 71,169.57, 98,214.53 and 39,339.41 is: 54,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,169.57 : 98,214.53 = 39,339.41 : x
  2. Step 2: Convert to fraction form
    71,169.57/98,214.53 = 39,339.41/x
  3. Step 3: Cross multiply
    71,169.57x = 98,214.53 × 39,339.41
  4. Step 4: Simplify right side
    71,169.57x = 3,863,700,975.86
  5. Step 5: Solve for x
    x = 3,863,700,975.86/71,169.57
  6. Step 6: Final answer
    x = 54,288.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.