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Finding the Fourth Proportional to 74,100.68, 110,960.72 and 40,783.56

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Solution

The fourth proportional to 74,100.68, 110,960.72 and 40,783.56 is: 61,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,100.68 : 110,960.72 = 40,783.56 : x
  2. Step 2: Convert to fraction form
    74,100.68/110,960.72 = 40,783.56/x
  3. Step 3: Cross multiply
    74,100.68x = 110,960.72 × 40,783.56
  4. Step 4: Simplify right side
    74,100.68x = 4,525,372,714.68
  5. Step 5: Solve for x
    x = 4,525,372,714.68/74,100.68
  6. Step 6: Final answer
    x = 61,070.60

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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.