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Finding the Fourth Proportional to 56,674.76, 85,012.25 and 21,135.56

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Solution

The fourth proportional to 56,674.76, 85,012.25 and 21,135.56 is: 31,703.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,674.76 : 85,012.25 = 21,135.56 : x
  2. Step 2: Convert to fraction form
    56,674.76/85,012.25 = 21,135.56/x
  3. Step 3: Cross multiply
    56,674.76x = 85,012.25 × 21,135.56
  4. Step 4: Simplify right side
    56,674.76x = 1,796,780,979.87
  5. Step 5: Solve for x
    x = 1,796,780,979.87/56,674.76
  6. Step 6: Final answer
    x = 31,703.37

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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.