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Finding the Fourth Proportional to 76,661.95, 105,793.33 and 43,127.95

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Solution

The fourth proportional to 76,661.95, 105,793.33 and 43,127.95 is: 59,516.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,661.95 : 105,793.33 = 43,127.95 : x
  2. Step 2: Convert to fraction form
    76,661.95/105,793.33 = 43,127.95/x
  3. Step 3: Cross multiply
    76,661.95x = 105,793.33 × 43,127.95
  4. Step 4: Simplify right side
    76,661.95x = 4,562,649,446.57
  5. Step 5: Solve for x
    x = 4,562,649,446.57/76,661.95
  6. Step 6: Final answer
    x = 59,516.48

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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.