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Finding the Fourth Proportional to 69,613.56, 96,065.28 and 39,398.34

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Solution

The fourth proportional to 69,613.56, 96,065.28 and 39,398.34 is: 54,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,613.56 : 96,065.28 = 39,398.34 : x
  2. Step 2: Convert to fraction form
    69,613.56/96,065.28 = 39,398.34/x
  3. Step 3: Cross multiply
    69,613.56x = 96,065.28 × 39,398.34
  4. Step 4: Simplify right side
    69,613.56x = 3,784,812,563.64
  5. Step 5: Solve for x
    x = 3,784,812,563.64/69,613.56
  6. Step 6: Final answer
    x = 54,368.90

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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.