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Finding the Fourth Proportional to 78,989, 118,487.82 and 23,589.32

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Solution

The fourth proportional to 78,989, 118,487.82 and 23,589.32 is: 35,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,989 : 118,487.82 = 23,589.32 : x
  2. Step 2: Convert to fraction form
    78,989/118,487.82 = 23,589.32/x
  3. Step 3: Cross multiply
    78,989x = 118,487.82 × 23,589.32
  4. Step 4: Simplify right side
    78,989x = 2,795,047,102.08
  5. Step 5: Solve for x
    x = 2,795,047,102.08/78,989
  6. Step 6: Final answer
    x = 35,385.27

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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.