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Finding the Fourth Proportional to 56,729.80, 85,097.90 and 17,288.20

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Solution

The fourth proportional to 56,729.80, 85,097.90 and 17,288.20 is: 25,933.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,729.80 : 85,097.90 = 17,288.20 : x
  2. Step 2: Convert to fraction form
    56,729.80/85,097.90 = 17,288.20/x
  3. Step 3: Cross multiply
    56,729.80x = 85,097.90 × 17,288.20
  4. Step 4: Simplify right side
    56,729.80x = 1,471,189,514.78
  5. Step 5: Solve for x
    x = 1,471,189,514.78/56,729.80
  6. Step 6: Final answer
    x = 25,933.28

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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.