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Finding the Fourth Proportional to 73,837.80, 110,756.70 and 38,408.40

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Solution

The fourth proportional to 73,837.80, 110,756.70 and 38,408.40 is: 57,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,837.80 : 110,756.70 = 38,408.40 : x
  2. Step 2: Convert to fraction form
    73,837.80/110,756.70 = 38,408.40/x
  3. Step 3: Cross multiply
    73,837.80x = 110,756.70 × 38,408.40
  4. Step 4: Simplify right side
    73,837.80x = 4,253,987,636.28
  5. Step 5: Solve for x
    x = 4,253,987,636.28/73,837.80
  6. Step 6: Final answer
    x = 57,612.60

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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.