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Finding the Fourth Proportional to 88,338.75, 121,908.69 and 50,613

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Solution

The fourth proportional to 88,338.75, 121,908.69 and 50,613 is: 69,846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,338.75 : 121,908.69 = 50,613 : x
  2. Step 2: Convert to fraction form
    88,338.75/121,908.69 = 50,613/x
  3. Step 3: Cross multiply
    88,338.75x = 121,908.69 × 50,613
  4. Step 4: Simplify right side
    88,338.75x = 6,170,164,526.97
  5. Step 5: Solve for x
    x = 6,170,164,526.97/88,338.75
  6. Step 6: Final answer
    x = 69,846.64

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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.