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Finding the Fourth Proportional to 54,170.64, 81,226.80 and 20,899.08

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Solution

The fourth proportional to 54,170.64, 81,226.80 and 20,899.08 is: 31,337.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,170.64 : 81,226.80 = 20,899.08 : x
  2. Step 2: Convert to fraction form
    54,170.64/81,226.80 = 20,899.08/x
  3. Step 3: Cross multiply
    54,170.64x = 81,226.80 × 20,899.08
  4. Step 4: Simplify right side
    54,170.64x = 1,697,565,391.34
  5. Step 5: Solve for x
    x = 1,697,565,391.34/54,170.64
  6. Step 6: Final answer
    x = 31,337.37

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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.