Home / 76,813.12-115,235.40-43,548.04

Finding the Fourth Proportional to 76,813.12, 115,235.40 and 43,548.04

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Solution

The fourth proportional to 76,813.12, 115,235.40 and 43,548.04 is: 65,330.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,813.12 : 115,235.40 = 43,548.04 : x
  2. Step 2: Convert to fraction form
    76,813.12/115,235.40 = 43,548.04/x
  3. Step 3: Cross multiply
    76,813.12x = 115,235.40 × 43,548.04
  4. Step 4: Simplify right side
    76,813.12x = 5,018,275,808.62
  5. Step 5: Solve for x
    x = 5,018,275,808.62/76,813.12
  6. Step 6: Final answer
    x = 65,330.97

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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.