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Finding the Fourth Proportional to 69,959.43, 96,540.53 and 39,740.76

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Solution

The fourth proportional to 69,959.43, 96,540.53 and 39,740.76 is: 54,840.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,959.43 : 96,540.53 = 39,740.76 : x
  2. Step 2: Convert to fraction form
    69,959.43/96,540.53 = 39,740.76/x
  3. Step 3: Cross multiply
    69,959.43x = 96,540.53 × 39,740.76
  4. Step 4: Simplify right side
    69,959.43x = 3,836,593,834.30
  5. Step 5: Solve for x
    x = 3,836,593,834.30/69,959.43
  6. Step 6: Final answer
    x = 54,840.27

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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.