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Finding the Fourth Proportional to 71,751.92, 107,628.12 and 21,832.40

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Solution

The fourth proportional to 71,751.92, 107,628.12 and 21,832.40 is: 32,748.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,751.92 : 107,628.12 = 21,832.40 : x
  2. Step 2: Convert to fraction form
    71,751.92/107,628.12 = 21,832.40/x
  3. Step 3: Cross multiply
    71,751.92x = 107,628.12 × 21,832.40
  4. Step 4: Simplify right side
    71,751.92x = 2,349,780,167.09
  5. Step 5: Solve for x
    x = 2,349,780,167.09/71,751.92
  6. Step 6: Final answer
    x = 32,748.67

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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.