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Finding the Fourth Proportional to 50,899, 70,240.62 and 28,543

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Solution

The fourth proportional to 50,899, 70,240.62 and 28,543 is: 39,389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,899 : 70,240.62 = 28,543 : x
  2. Step 2: Convert to fraction form
    50,899/70,240.62 = 28,543/x
  3. Step 3: Cross multiply
    50,899x = 70,240.62 × 28,543
  4. Step 4: Simplify right side
    50,899x = 2,004,878,016.66
  5. Step 5: Solve for x
    x = 2,004,878,016.66/50,899
  6. Step 6: Final answer
    x = 39,389.34

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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.