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Finding the Fourth Proportional to 39,951.90, 55,136.90 and 22,048.67

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Solution

The fourth proportional to 39,951.90, 55,136.90 and 22,048.67 is: 30,428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,951.90 : 55,136.90 = 22,048.67 : x
  2. Step 2: Convert to fraction form
    39,951.90/55,136.90 = 22,048.67/x
  3. Step 3: Cross multiply
    39,951.90x = 55,136.90 × 22,048.67
  4. Step 4: Simplify right side
    39,951.90x = 1,215,695,505.89
  5. Step 5: Solve for x
    x = 1,215,695,505.89/39,951.90
  6. Step 6: Final answer
    x = 30,428.98

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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.