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Finding the Fourth Proportional to 50,971.28, 70,340.37 and 28,615.28

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Solution

The fourth proportional to 50,971.28, 70,340.37 and 28,615.28 is: 39,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,971.28 : 70,340.37 = 28,615.28 : x
  2. Step 2: Convert to fraction form
    50,971.28/70,340.37 = 28,615.28/x
  3. Step 3: Cross multiply
    50,971.28x = 70,340.37 × 28,615.28
  4. Step 4: Simplify right side
    50,971.28x = 2,012,809,382.85
  5. Step 5: Solve for x
    x = 2,012,809,382.85/50,971.28
  6. Step 6: Final answer
    x = 39,489.09

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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.