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Finding the Fourth Proportional to 69,835.95, 104,790.38 and 66,071.88

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Solution

The fourth proportional to 69,835.95, 104,790.38 and 66,071.88 is: 99,142.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,835.95 : 104,790.38 = 66,071.88 : x
  2. Step 2: Convert to fraction form
    69,835.95/104,790.38 = 66,071.88/x
  3. Step 3: Cross multiply
    69,835.95x = 104,790.38 × 66,071.88
  4. Step 4: Simplify right side
    69,835.95x = 6,923,697,082.16
  5. Step 5: Solve for x
    x = 6,923,697,082.16/69,835.95
  6. Step 6: Final answer
    x = 99,142.31

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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.