Home / 77,649.75-116,391.54-40,172.07

Finding the Fourth Proportional to 77,649.75, 116,391.54 and 40,172.07

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Solution

The fourth proportional to 77,649.75, 116,391.54 and 40,172.07 is: 60,215.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,649.75 : 116,391.54 = 40,172.07 : x
  2. Step 2: Convert to fraction form
    77,649.75/116,391.54 = 40,172.07/x
  3. Step 3: Cross multiply
    77,649.75x = 116,391.54 × 40,172.07
  4. Step 4: Simplify right side
    77,649.75x = 4,675,689,092.29
  5. Step 5: Solve for x
    x = 4,675,689,092.29/77,649.75
  6. Step 6: Final answer
    x = 60,215.12

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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.