Home / 76,378.30-114,566.19-31,390.54

Finding the Fourth Proportional to 76,378.30, 114,566.19 and 31,390.54

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Solution

The fourth proportional to 76,378.30, 114,566.19 and 31,390.54 is: 47,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,378.30 : 114,566.19 = 31,390.54 : x
  2. Step 2: Convert to fraction form
    76,378.30/114,566.19 = 31,390.54/x
  3. Step 3: Cross multiply
    76,378.30x = 114,566.19 × 31,390.54
  4. Step 4: Simplify right side
    76,378.30x = 3,596,294,934.73
  5. Step 5: Solve for x
    x = 3,596,294,934.73/76,378.30
  6. Step 6: Final answer
    x = 47,085.30

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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.