Home / 78,942.40-118,432.07-53,994.20

Finding the Fourth Proportional to 78,942.40, 118,432.07 and 53,994.20

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Solution

The fourth proportional to 78,942.40, 118,432.07 and 53,994.20 is: 81,003.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,942.40 : 118,432.07 = 53,994.20 : x
  2. Step 2: Convert to fraction form
    78,942.40/118,432.07 = 53,994.20/x
  3. Step 3: Cross multiply
    78,942.40x = 118,432.07 × 53,994.20
  4. Step 4: Simplify right side
    78,942.40x = 6,394,644,604.02
  5. Step 5: Solve for x
    x = 6,394,644,604.02/78,942.40
  6. Step 6: Final answer
    x = 81,003.93

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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.