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Finding the Fourth Proportional to 79,393.77, 119,087.82 and 20,228.94

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Solution

The fourth proportional to 79,393.77, 119,087.82 and 20,228.94 is: 30,342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,393.77 : 119,087.82 = 20,228.94 : x
  2. Step 2: Convert to fraction form
    79,393.77/119,087.82 = 20,228.94/x
  3. Step 3: Cross multiply
    79,393.77x = 119,087.82 × 20,228.94
  4. Step 4: Simplify right side
    79,393.77x = 2,409,020,365.51
  5. Step 5: Solve for x
    x = 2,409,020,365.51/79,393.77
  6. Step 6: Final answer
    x = 30,342.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.