Home / 76,782.46-115,182.92-72,583.42

Finding the Fourth Proportional to 76,782.46, 115,182.92 and 72,583.42

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Solution

The fourth proportional to 76,782.46, 115,182.92 and 72,583.42 is: 108,883.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,782.46 : 115,182.92 = 72,583.42 : x
  2. Step 2: Convert to fraction form
    76,782.46/115,182.92 = 72,583.42/x
  3. Step 3: Cross multiply
    76,782.46x = 115,182.92 × 72,583.42
  4. Step 4: Simplify right side
    76,782.46x = 8,360,370,259.19
  5. Step 5: Solve for x
    x = 8,360,370,259.19/76,782.46
  6. Step 6: Final answer
    x = 108,883.86

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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.