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Finding the Fourth Proportional to 78,760.73, 118,140.84 and 19,596.39

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Solution

The fourth proportional to 78,760.73, 118,140.84 and 19,596.39 is: 29,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760.73 : 118,140.84 = 19,596.39 : x
  2. Step 2: Convert to fraction form
    78,760.73/118,140.84 = 19,596.39/x
  3. Step 3: Cross multiply
    78,760.73x = 118,140.84 × 19,596.39
  4. Step 4: Simplify right side
    78,760.73x = 2,315,133,975.57
  5. Step 5: Solve for x
    x = 2,315,133,975.57/78,760.73
  6. Step 6: Final answer
    x = 29,394.52

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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.