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Finding the Fourth Proportional to 56,290.98, 84,858.18 and 52,485.78

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Solution

The fourth proportional to 56,290.98, 84,858.18 and 52,485.78 is: 79,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,290.98 : 84,858.18 = 52,485.78 : x
  2. Step 2: Convert to fraction form
    56,290.98/84,858.18 = 52,485.78/x
  3. Step 3: Cross multiply
    56,290.98x = 84,858.18 × 52,485.78
  4. Step 4: Simplify right side
    56,290.98x = 4,453,847,766.68
  5. Step 5: Solve for x
    x = 4,453,847,766.68/56,290.98
  6. Step 6: Final answer
    x = 79,121.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.