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Finding the Fourth Proportional to 50,869.49, 70,200.50 and 28,208.77

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Solution

The fourth proportional to 50,869.49, 70,200.50 and 28,208.77 is: 38,928.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,869.49 : 70,200.50 = 28,208.77 : x
  2. Step 2: Convert to fraction form
    50,869.49/70,200.50 = 28,208.77/x
  3. Step 3: Cross multiply
    50,869.49x = 70,200.50 × 28,208.77
  4. Step 4: Simplify right side
    50,869.49x = 1,980,269,441.84
  5. Step 5: Solve for x
    x = 1,980,269,441.84/50,869.49
  6. Step 6: Final answer
    x = 38,928.44

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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.