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Finding the Fourth Proportional to 51,630.60, 71,249.03 and 28,969.09

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Solution

The fourth proportional to 51,630.60, 71,249.03 and 28,969.09 is: 39,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,630.60 : 71,249.03 = 28,969.09 : x
  2. Step 2: Convert to fraction form
    51,630.60/71,249.03 = 28,969.09/x
  3. Step 3: Cross multiply
    51,630.60x = 71,249.03 × 28,969.09
  4. Step 4: Simplify right side
    51,630.60x = 2,064,019,417.64
  5. Step 5: Solve for x
    x = 2,064,019,417.64/51,630.60
  6. Step 6: Final answer
    x = 39,976.67

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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.