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Finding the Fourth Proportional to 73,642.80, 110,512.80 and 42,052.80

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Solution

The fourth proportional to 73,642.80, 110,512.80 and 42,052.80 is: 63,106.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,642.80 : 110,512.80 = 42,052.80 : x
  2. Step 2: Convert to fraction form
    73,642.80/110,512.80 = 42,052.80/x
  3. Step 3: Cross multiply
    73,642.80x = 110,512.80 × 42,052.80
  4. Step 4: Simplify right side
    73,642.80x = 4,647,372,675.84
  5. Step 5: Solve for x
    x = 4,647,372,675.84/73,642.80
  6. Step 6: Final answer
    x = 63,106.95

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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.