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Finding the Fourth Proportional to 69,434.56, 95,810.88 and 39,221.56

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Solution

The fourth proportional to 69,434.56, 95,810.88 and 39,221.56 is: 54,120.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,434.56 : 95,810.88 = 39,221.56 : x
  2. Step 2: Convert to fraction form
    69,434.56/95,810.88 = 39,221.56/x
  3. Step 3: Cross multiply
    69,434.56x = 95,810.88 × 39,221.56
  4. Step 4: Simplify right side
    69,434.56x = 3,757,852,178.57
  5. Step 5: Solve for x
    x = 3,757,852,178.57/69,434.56
  6. Step 6: Final answer
    x = 54,120.77

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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.