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Finding the Fourth Proportional to 69,622.92, 96,081.84 and 39,407.70

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Solution

The fourth proportional to 69,622.92, 96,081.84 and 39,407.70 is: 54,383.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,622.92 : 96,081.84 = 39,407.70 : x
  2. Step 2: Convert to fraction form
    69,622.92/96,081.84 = 39,407.70/x
  3. Step 3: Cross multiply
    69,622.92x = 96,081.84 × 39,407.70
  4. Step 4: Simplify right side
    69,622.92x = 3,786,364,326.17
  5. Step 5: Solve for x
    x = 3,786,364,326.17/69,622.92
  6. Step 6: Final answer
    x = 54,383.88

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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.