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Finding the Fourth Proportional to 56,625.40, 84,947.31 and 21,086.85

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Solution

The fourth proportional to 56,625.40, 84,947.31 and 21,086.85 is: 31,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,625.40 : 84,947.31 = 21,086.85 : x
  2. Step 2: Convert to fraction form
    56,625.40/84,947.31 = 21,086.85/x
  3. Step 3: Cross multiply
    56,625.40x = 84,947.31 × 21,086.85
  4. Step 4: Simplify right side
    56,625.40x = 1,791,271,183.87
  5. Step 5: Solve for x
    x = 1,791,271,183.87/56,625.40
  6. Step 6: Final answer
    x = 31,633.70

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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.