Home / 76,912.78-115,368.65-41,390.81

Finding the Fourth Proportional to 76,912.78, 115,368.65 and 41,390.81

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Solution

The fourth proportional to 76,912.78, 115,368.65 and 41,390.81 is: 62,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.78 : 115,368.65 = 41,390.81 : x
  2. Step 2: Convert to fraction form
    76,912.78/115,368.65 = 41,390.81/x
  3. Step 3: Cross multiply
    76,912.78x = 115,368.65 × 41,390.81
  4. Step 4: Simplify right side
    76,912.78x = 4,775,202,264.01
  5. Step 5: Solve for x
    x = 4,775,202,264.01/76,912.78
  6. Step 6: Final answer
    x = 62,085.94

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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.