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Finding the Fourth Proportional to 78,943.88, 118,371.90 and 26,324.66

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Solution

The fourth proportional to 78,943.88, 118,371.90 and 26,324.66 is: 39,472.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.88 : 118,371.90 = 26,324.66 : x
  2. Step 2: Convert to fraction form
    78,943.88/118,371.90 = 26,324.66/x
  3. Step 3: Cross multiply
    78,943.88x = 118,371.90 × 26,324.66
  4. Step 4: Simplify right side
    78,943.88x = 3,116,100,021.05
  5. Step 5: Solve for x
    x = 3,116,100,021.05/78,943.88
  6. Step 6: Final answer
    x = 39,472.34

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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.