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Finding the Fourth Proportional to 66,968.95, 100,453.41 and 52,188.92

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Solution

The fourth proportional to 66,968.95, 100,453.41 and 52,188.92 is: 78,283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,968.95 : 100,453.41 = 52,188.92 : x
  2. Step 2: Convert to fraction form
    66,968.95/100,453.41 = 52,188.92/x
  3. Step 3: Cross multiply
    66,968.95x = 100,453.41 × 52,188.92
  4. Step 4: Simplify right side
    66,968.95x = 5,242,554,978.22
  5. Step 5: Solve for x
    x = 5,242,554,978.22/66,968.95
  6. Step 6: Final answer
    x = 78,283.37

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1.5x scale

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.