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Finding the Fourth Proportional to 66,474.96, 92,131.38 and 65,230.80

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Solution

The fourth proportional to 66,474.96, 92,131.38 and 65,230.80 is: 90,407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474.96 : 92,131.38 = 65,230.80 : x
  2. Step 2: Convert to fraction form
    66,474.96/92,131.38 = 65,230.80/x
  3. Step 3: Cross multiply
    66,474.96x = 92,131.38 × 65,230.80
  4. Step 4: Simplify right side
    66,474.96x = 6,009,803,622.50
  5. Step 5: Solve for x
    x = 6,009,803,622.50/66,474.96
  6. Step 6: Final answer
    x = 90,407.03

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.