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Finding the Fourth Proportional to 84,736.70, 127,104.14 and 20,695.42

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Solution

The fourth proportional to 84,736.70, 127,104.14 and 20,695.42 is: 31,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,736.70 : 127,104.14 = 20,695.42 : x
  2. Step 2: Convert to fraction form
    84,736.70/127,104.14 = 20,695.42/x
  3. Step 3: Cross multiply
    84,736.70x = 127,104.14 × 20,695.42
  4. Step 4: Simplify right side
    84,736.70x = 2,630,473,561.04
  5. Step 5: Solve for x
    x = 2,630,473,561.04/84,736.70
  6. Step 6: Final answer
    x = 31,042.91

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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.