Home / 76,879.50-115,333.18-34,779.42

Finding the Fourth Proportional to 76,879.50, 115,333.18 and 34,779.42

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Solution

The fourth proportional to 76,879.50, 115,333.18 and 34,779.42 is: 52,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,879.50 : 115,333.18 = 34,779.42 : x
  2. Step 2: Convert to fraction form
    76,879.50/115,333.18 = 34,779.42/x
  3. Step 3: Cross multiply
    76,879.50x = 115,333.18 × 34,779.42
  4. Step 4: Simplify right side
    76,879.50x = 4,011,221,107.16
  5. Step 5: Solve for x
    x = 4,011,221,107.16/76,879.50
  6. Step 6: Final answer
    x = 52,175.43

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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.