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Finding the Fourth Proportional to 53,911.71, 80,812.08 and 20,622.74

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Solution

The fourth proportional to 53,911.71, 80,812.08 and 20,622.74 is: 30,912.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,911.71 : 80,812.08 = 20,622.74 : x
  2. Step 2: Convert to fraction form
    53,911.71/80,812.08 = 20,622.74/x
  3. Step 3: Cross multiply
    53,911.71x = 80,812.08 × 20,622.74
  4. Step 4: Simplify right side
    53,911.71x = 1,666,566,110.64
  5. Step 5: Solve for x
    x = 1,666,566,110.64/53,911.71
  6. Step 6: Final answer
    x = 30,912.88

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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.