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Finding the Fourth Proportional to 88,263, 121,805.64 and 50,021.60

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Solution

The fourth proportional to 88,263, 121,805.64 and 50,021.60 is: 69,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,263 : 121,805.64 = 50,021.60 : x
  2. Step 2: Convert to fraction form
    88,263/121,805.64 = 50,021.60/x
  3. Step 3: Cross multiply
    88,263x = 121,805.64 × 50,021.60
  4. Step 4: Simplify right side
    88,263x = 6,092,912,392.80
  5. Step 5: Solve for x
    x = 6,092,912,392.80/88,263
  6. Step 6: Final answer
    x = 69,031.33

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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.