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Finding the Fourth Proportional to 78,990, 118,504.44 and 23,586

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Solution

The fourth proportional to 78,990, 118,504.44 and 23,586 is: 35,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,990 : 118,504.44 = 23,586 : x
  2. Step 2: Convert to fraction form
    78,990/118,504.44 = 23,586/x
  3. Step 3: Cross multiply
    78,990x = 118,504.44 × 23,586
  4. Step 4: Simplify right side
    78,990x = 2,795,045,721.84
  5. Step 5: Solve for x
    x = 2,795,045,721.84/78,990
  6. Step 6: Final answer
    x = 35,384.80

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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.