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Finding the Fourth Proportional to 57,016.40, 85,464.12 and 21,940.88

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Solution

The fourth proportional to 57,016.40, 85,464.12 and 21,940.88 is: 32,888.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,016.40 : 85,464.12 = 21,940.88 : x
  2. Step 2: Convert to fraction form
    57,016.40/85,464.12 = 21,940.88/x
  3. Step 3: Cross multiply
    57,016.40x = 85,464.12 × 21,940.88
  4. Step 4: Simplify right side
    57,016.40x = 1,875,158,001.23
  5. Step 5: Solve for x
    x = 1,875,158,001.23/57,016.40
  6. Step 6: Final answer
    x = 32,888.05

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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.