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Finding the Fourth Proportional to 84,622.70, 126,940.40 and 28,462.98

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Solution

The fourth proportional to 84,622.70, 126,940.40 and 28,462.98 is: 42,696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,622.70 : 126,940.40 = 28,462.98 : x
  2. Step 2: Convert to fraction form
    84,622.70/126,940.40 = 28,462.98/x
  3. Step 3: Cross multiply
    84,622.70x = 126,940.40 × 28,462.98
  4. Step 4: Simplify right side
    84,622.70x = 3,613,102,066.39
  5. Step 5: Solve for x
    x = 3,613,102,066.39/84,622.70
  6. Step 6: Final answer
    x = 42,696.61

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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.