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Finding the Fourth Proportional to 50,489.40, 69,675.30 and 28,133.40

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Solution

The fourth proportional to 50,489.40, 69,675.30 and 28,133.40 is: 38,824.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,489.40 : 69,675.30 = 28,133.40 : x
  2. Step 2: Convert to fraction form
    50,489.40/69,675.30 = 28,133.40/x
  3. Step 3: Cross multiply
    50,489.40x = 69,675.30 × 28,133.40
  4. Step 4: Simplify right side
    50,489.40x = 1,960,203,085.02
  5. Step 5: Solve for x
    x = 1,960,203,085.02/50,489.40
  6. Step 6: Final answer
    x = 38,824.05

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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.