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Finding the Fourth Proportional to 69,900.67, 96,466.34 and 39,685.44

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Solution

The fourth proportional to 69,900.67, 96,466.34 and 39,685.44 is: 54,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,900.67 : 96,466.34 = 39,685.44 : x
  2. Step 2: Convert to fraction form
    69,900.67/96,466.34 = 39,685.44/x
  3. Step 3: Cross multiply
    69,900.67x = 96,466.34 × 39,685.44
  4. Step 4: Simplify right side
    69,900.67x = 3,828,309,148.09
  5. Step 5: Solve for x
    x = 3,828,309,148.09/69,900.67
  6. Step 6: Final answer
    x = 54,767.85

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1.5x scale

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.