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Finding the Fourth Proportional to 57,268.88, 85,882.71 and 19,818.77

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Solution

The fourth proportional to 57,268.88, 85,882.71 and 19,818.77 is: 29,721.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,268.88 : 85,882.71 = 19,818.77 : x
  2. Step 2: Convert to fraction form
    57,268.88/85,882.71 = 19,818.77/x
  3. Step 3: Cross multiply
    57,268.88x = 85,882.71 × 19,818.77
  4. Step 4: Simplify right side
    57,268.88x = 1,702,089,247.05
  5. Step 5: Solve for x
    x = 1,702,089,247.05/57,268.88
  6. Step 6: Final answer
    x = 29,721.02

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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.