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Finding the Fourth Proportional to 56,321.40, 84,482.10 and 55,446.60

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Solution

The fourth proportional to 56,321.40, 84,482.10 and 55,446.60 is: 83,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,321.40 : 84,482.10 = 55,446.60 : x
  2. Step 2: Convert to fraction form
    56,321.40/84,482.10 = 55,446.60/x
  3. Step 3: Cross multiply
    56,321.40x = 84,482.10 × 55,446.60
  4. Step 4: Simplify right side
    56,321.40x = 4,684,245,205.86
  5. Step 5: Solve for x
    x = 4,684,245,205.86/56,321.40
  6. Step 6: Final answer
    x = 83,169.90

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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.