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Finding the Fourth Proportional to 70,506.05, 105,691.64 and 26,120.88

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Solution

The fourth proportional to 70,506.05, 105,691.64 and 26,120.88 is: 39,156.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,506.05 : 105,691.64 = 26,120.88 : x
  2. Step 2: Convert to fraction form
    70,506.05/105,691.64 = 26,120.88/x
  3. Step 3: Cross multiply
    70,506.05x = 105,691.64 × 26,120.88
  4. Step 4: Simplify right side
    70,506.05x = 2,760,758,514.84
  5. Step 5: Solve for x
    x = 2,760,758,514.84/70,506.05
  6. Step 6: Final answer
    x = 39,156.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.