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Finding the Fourth Proportional to 69,263.40, 103,635.90 and 45,935.40

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Solution

The fourth proportional to 69,263.40, 103,635.90 and 45,935.40 is: 68,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,263.40 : 103,635.90 = 45,935.40 : x
  2. Step 2: Convert to fraction form
    69,263.40/103,635.90 = 45,935.40/x
  3. Step 3: Cross multiply
    69,263.40x = 103,635.90 × 45,935.40
  4. Step 4: Simplify right side
    69,263.40x = 4,760,556,520.86
  5. Step 5: Solve for x
    x = 4,760,556,520.86/69,263.40
  6. Step 6: Final answer
    x = 68,731.20

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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.