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Finding the Fourth Proportional to 50,457.75, 69,631.70 and 28,101.75

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Solution

The fourth proportional to 50,457.75, 69,631.70 and 28,101.75 is: 38,780.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,457.75 : 69,631.70 = 28,101.75 : x
  2. Step 2: Convert to fraction form
    50,457.75/69,631.70 = 28,101.75/x
  3. Step 3: Cross multiply
    50,457.75x = 69,631.70 × 28,101.75
  4. Step 4: Simplify right side
    50,457.75x = 1,956,772,625.48
  5. Step 5: Solve for x
    x = 1,956,772,625.48/50,457.75
  6. Step 6: Final answer
    x = 38,780.42

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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.