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Finding the Fourth Proportional to 55,999.64, 83,998.39 and 13,879.81

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Solution

The fourth proportional to 55,999.64, 83,998.39 and 13,879.81 is: 20,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,999.64 : 83,998.39 = 13,879.81 : x
  2. Step 2: Convert to fraction form
    55,999.64/83,998.39 = 13,879.81/x
  3. Step 3: Cross multiply
    55,999.64x = 83,998.39 × 13,879.81
  4. Step 4: Simplify right side
    55,999.64x = 1,165,881,834.10
  5. Step 5: Solve for x
    x = 1,165,881,834.10/55,999.64
  6. Step 6: Final answer
    x = 20,819.45

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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.