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Finding the Fourth Proportional to 55,789.80, 83,684.70 and 14,236.80

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Solution

The fourth proportional to 55,789.80, 83,684.70 and 14,236.80 is: 21,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,789.80 : 83,684.70 = 14,236.80 : x
  2. Step 2: Convert to fraction form
    55,789.80/83,684.70 = 14,236.80/x
  3. Step 3: Cross multiply
    55,789.80x = 83,684.70 × 14,236.80
  4. Step 4: Simplify right side
    55,789.80x = 1,191,402,336.96
  5. Step 5: Solve for x
    x = 1,191,402,336.96/55,789.80
  6. Step 6: Final answer
    x = 21,355.20

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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.