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Finding the Fourth Proportional to 50,869.98, 70,207.77 and 28,213.98

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Solution

The fourth proportional to 50,869.98, 70,207.77 and 28,213.98 is: 38,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,869.98 : 70,207.77 = 28,213.98 : x
  2. Step 2: Convert to fraction form
    50,869.98/70,207.77 = 28,213.98/x
  3. Step 3: Cross multiply
    50,869.98x = 70,207.77 × 28,213.98
  4. Step 4: Simplify right side
    50,869.98x = 1,980,840,618.62
  5. Step 5: Solve for x
    x = 1,980,840,618.62/50,869.98
  6. Step 6: Final answer
    x = 38,939.28

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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.