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Finding the Fourth Proportional to 128,962.44, 193,463.10 and 45,837

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Solution

The fourth proportional to 128,962.44, 193,463.10 and 45,837 is: 68,762.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,962.44 : 193,463.10 = 45,837 : x
  2. Step 2: Convert to fraction form
    128,962.44/193,463.10 = 45,837/x
  3. Step 3: Cross multiply
    128,962.44x = 193,463.10 × 45,837
  4. Step 4: Simplify right side
    128,962.44x = 8,867,768,114.70
  5. Step 5: Solve for x
    x = 8,867,768,114.70/128,962.44
  6. Step 6: Final answer
    x = 68,762.41

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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.