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Finding the Fourth Proportional to 79,139.45, 118,715.32 and 22,980.48

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Solution

The fourth proportional to 79,139.45, 118,715.32 and 22,980.48 is: 34,472.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.45 : 118,715.32 = 22,980.48 : x
  2. Step 2: Convert to fraction form
    79,139.45/118,715.32 = 22,980.48/x
  3. Step 3: Cross multiply
    79,139.45x = 118,715.32 × 22,980.48
  4. Step 4: Simplify right side
    79,139.45x = 2,728,134,922.05
  5. Step 5: Solve for x
    x = 2,728,134,922.05/79,139.45
  6. Step 6: Final answer
    x = 34,472.51

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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.