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Finding the Fourth Proportional to 78,942.60, 118,310.22 and 37,401.48

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Solution

The fourth proportional to 78,942.60, 118,310.22 and 37,401.48 is: 56,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,942.60 : 118,310.22 = 37,401.48 : x
  2. Step 2: Convert to fraction form
    78,942.60/118,310.22 = 37,401.48/x
  3. Step 3: Cross multiply
    78,942.60x = 118,310.22 × 37,401.48
  4. Step 4: Simplify right side
    78,942.60x = 4,424,977,327.13
  5. Step 5: Solve for x
    x = 4,424,977,327.13/78,942.60
  6. Step 6: Final answer
    x = 56,053.10

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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.