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Finding the Fourth Proportional to 70,527.92, 105,798.69 and 20,606.87

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Solution

The fourth proportional to 70,527.92, 105,798.69 and 20,606.87 is: 30,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,527.92 : 105,798.69 = 20,606.87 : x
  2. Step 2: Convert to fraction form
    70,527.92/105,798.69 = 20,606.87/x
  3. Step 3: Cross multiply
    70,527.92x = 105,798.69 × 20,606.87
  4. Step 4: Simplify right side
    70,527.92x = 2,180,180,115.50
  5. Step 5: Solve for x
    x = 2,180,180,115.50/70,527.92
  6. Step 6: Final answer
    x = 30,912.30

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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.