Home / 76,739.82-105,905.79-43,207.98

Finding the Fourth Proportional to 76,739.82, 105,905.79 and 43,207.98

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Solution

The fourth proportional to 76,739.82, 105,905.79 and 43,207.98 is: 59,629.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,739.82 : 105,905.79 = 43,207.98 : x
  2. Step 2: Convert to fraction form
    76,739.82/105,905.79 = 43,207.98/x
  3. Step 3: Cross multiply
    76,739.82x = 105,905.79 × 43,207.98
  4. Step 4: Simplify right side
    76,739.82x = 4,575,975,256.20
  5. Step 5: Solve for x
    x = 4,575,975,256.20/76,739.82
  6. Step 6: Final answer
    x = 59,629.74

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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.