Home / 76,676.52-105,806.34-43,140.36

Finding the Fourth Proportional to 76,676.52, 105,806.34 and 43,140.36

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Solution

The fourth proportional to 76,676.52, 105,806.34 and 43,140.36 is: 59,529.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,676.52 : 105,806.34 = 43,140.36 : x
  2. Step 2: Convert to fraction form
    76,676.52/105,806.34 = 43,140.36/x
  3. Step 3: Cross multiply
    76,676.52x = 105,806.34 × 43,140.36
  4. Step 4: Simplify right side
    76,676.52x = 4,564,523,597.88
  5. Step 5: Solve for x
    x = 4,564,523,597.88/76,676.52
  6. Step 6: Final answer
    x = 59,529.61

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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.