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Finding the Fourth Proportional to 69,520.79, 95,943.60 and 39,306.40

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Solution

The fourth proportional to 69,520.79, 95,943.60 and 39,306.40 is: 54,245.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,520.79 : 95,943.60 = 39,306.40 : x
  2. Step 2: Convert to fraction form
    69,520.79/95,943.60 = 39,306.40/x
  3. Step 3: Cross multiply
    69,520.79x = 95,943.60 × 39,306.40
  4. Step 4: Simplify right side
    69,520.79x = 3,771,197,519.04
  5. Step 5: Solve for x
    x = 3,771,197,519.04/69,520.79
  6. Step 6: Final answer
    x = 54,245.61

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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.