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Finding the Fourth Proportional to 55,210.70, 82,816.05 and 13,657.70

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Solution

The fourth proportional to 55,210.70, 82,816.05 and 13,657.70 is: 20,486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,210.70 : 82,816.05 = 13,657.70 : x
  2. Step 2: Convert to fraction form
    55,210.70/82,816.05 = 13,657.70/x
  3. Step 3: Cross multiply
    55,210.70x = 82,816.05 × 13,657.70
  4. Step 4: Simplify right side
    55,210.70x = 1,131,076,766.09
  5. Step 5: Solve for x
    x = 1,131,076,766.09/55,210.70
  6. Step 6: Final answer
    x = 20,486.55

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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.