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Finding the Fourth Proportional to 54,959.50, 82,383.86 and 21,666.68

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Solution

The fourth proportional to 54,959.50, 82,383.86 and 21,666.68 is: 32,478.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,959.50 : 82,383.86 = 21,666.68 : x
  2. Step 2: Convert to fraction form
    54,959.50/82,383.86 = 21,666.68/x
  3. Step 3: Cross multiply
    54,959.50x = 82,383.86 × 21,666.68
  4. Step 4: Simplify right side
    54,959.50x = 1,784,984,731.78
  5. Step 5: Solve for x
    x = 1,784,984,731.78/54,959.50
  6. Step 6: Final answer
    x = 32,478.18

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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.