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Finding the Fourth Proportional to 78,998.94, 118,549.98 and 29,079.54

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Solution

The fourth proportional to 78,998.94, 118,549.98 and 29,079.54 is: 43,638.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,998.94 : 118,549.98 = 29,079.54 : x
  2. Step 2: Convert to fraction form
    78,998.94/118,549.98 = 29,079.54/x
  3. Step 3: Cross multiply
    78,998.94x = 118,549.98 × 29,079.54
  4. Step 4: Simplify right side
    78,998.94x = 3,447,378,885.41
  5. Step 5: Solve for x
    x = 3,447,378,885.41/78,998.94
  6. Step 6: Final answer
    x = 43,638.29

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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.