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Finding the Fourth Proportional to 50,685.72, 69,945.86 and 28,025.30

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Solution

The fourth proportional to 50,685.72, 69,945.86 and 28,025.30 is: 38,674.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,685.72 : 69,945.86 = 28,025.30 : x
  2. Step 2: Convert to fraction form
    50,685.72/69,945.86 = 28,025.30/x
  3. Step 3: Cross multiply
    50,685.72x = 69,945.86 × 28,025.30
  4. Step 4: Simplify right side
    50,685.72x = 1,960,253,710.26
  5. Step 5: Solve for x
    x = 1,960,253,710.26/50,685.72
  6. Step 6: Final answer
    x = 38,674.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.