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Finding the Fourth Proportional to 77,699.39, 107,121.92 and 50,795.64

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Solution

The fourth proportional to 77,699.39, 107,121.92 and 50,795.64 is: 70,030.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,699.39 : 107,121.92 = 50,795.64 : x
  2. Step 2: Convert to fraction form
    77,699.39/107,121.92 = 50,795.64/x
  3. Step 3: Cross multiply
    77,699.39x = 107,121.92 × 50,795.64
  4. Step 4: Simplify right side
    77,699.39x = 5,441,326,230.45
  5. Step 5: Solve for x
    x = 5,441,326,230.45/77,699.39
  6. Step 6: Final answer
    x = 70,030.49

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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.