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Finding the Fourth Proportional to 76,699.56, 105,844.14 and 43,165.56

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Solution

The fourth proportional to 76,699.56, 105,844.14 and 43,165.56 is: 59,567.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,699.56 : 105,844.14 = 43,165.56 : x
  2. Step 2: Convert to fraction form
    76,699.56/105,844.14 = 43,165.56/x
  3. Step 3: Cross multiply
    76,699.56x = 105,844.14 × 43,165.56
  4. Step 4: Simplify right side
    76,699.56x = 4,568,821,575.82
  5. Step 5: Solve for x
    x = 4,568,821,575.82/76,699.56
  6. Step 6: Final answer
    x = 59,567.77

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1.5x scale

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.