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Finding the Fourth Proportional to 45,712.52, 68,527.26 and 20,738.97

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Solution

The fourth proportional to 45,712.52, 68,527.26 and 20,738.97 is: 31,089.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,712.52 : 68,527.26 = 20,738.97 : x
  2. Step 2: Convert to fraction form
    45,712.52/68,527.26 = 20,738.97/x
  3. Step 3: Cross multiply
    45,712.52x = 68,527.26 × 20,738.97
  4. Step 4: Simplify right side
    45,712.52x = 1,421,184,789.32
  5. Step 5: Solve for x
    x = 1,421,184,789.32/45,712.52
  6. Step 6: Final answer
    x = 31,089.62

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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.