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Finding the Fourth Proportional to 66,912.40, 100,222.80 and 59,525.20

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Solution

The fourth proportional to 66,912.40, 100,222.80 and 59,525.20 is: 89,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,912.40 : 100,222.80 = 59,525.20 : x
  2. Step 2: Convert to fraction form
    66,912.40/100,222.80 = 59,525.20/x
  3. Step 3: Cross multiply
    66,912.40x = 100,222.80 × 59,525.20
  4. Step 4: Simplify right side
    66,912.40x = 5,965,782,214.56
  5. Step 5: Solve for x
    x = 5,965,782,214.56/66,912.40
  6. Step 6: Final answer
    x = 89,158.10

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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.