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Finding the Fourth Proportional to 66,228.00, 91,428.50 and 51,086.67

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Solution

The fourth proportional to 66,228.00, 91,428.50 and 51,086.67 is: 70,525.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,228.00 : 91,428.50 = 51,086.67 : x
  2. Step 2: Convert to fraction form
    66,228.00/91,428.50 = 51,086.67/x
  3. Step 3: Cross multiply
    66,228.00x = 91,428.50 × 51,086.67
  4. Step 4: Simplify right side
    66,228.00x = 4,670,777,392.95
  5. Step 5: Solve for x
    x = 4,670,777,392.95/66,228.00
  6. Step 6: Final answer
    x = 70,525.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.