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Finding the Fourth Proportional to 78,983.80, 118,494.49 and 25,676.01

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Solution

The fourth proportional to 78,983.80, 118,494.49 and 25,676.01 is: 38,520.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,983.80 : 118,494.49 = 25,676.01 : x
  2. Step 2: Convert to fraction form
    78,983.80/118,494.49 = 25,676.01/x
  3. Step 3: Cross multiply
    78,983.80x = 118,494.49 × 25,676.01
  4. Step 4: Simplify right side
    78,983.80x = 3,042,466,009.35
  5. Step 5: Solve for x
    x = 3,042,466,009.35/78,983.80
  6. Step 6: Final answer
    x = 38,520.13

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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.