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Finding the Fourth Proportional to 76,899.78, 115,326.99 and 32,525.55

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Solution

The fourth proportional to 76,899.78, 115,326.99 and 32,525.55 is: 48,778.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,899.78 : 115,326.99 = 32,525.55 : x
  2. Step 2: Convert to fraction form
    76,899.78/115,326.99 = 32,525.55/x
  3. Step 3: Cross multiply
    76,899.78x = 115,326.99 × 32,525.55
  4. Step 4: Simplify right side
    76,899.78x = 3,751,073,779.59
  5. Step 5: Solve for x
    x = 3,751,073,779.59/76,899.78
  6. Step 6: Final answer
    x = 48,778.73

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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.