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Finding the Fourth Proportional to 66,917.13, 100,390.27 and 25,364.13

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Solution

The fourth proportional to 66,917.13, 100,390.27 and 25,364.13 is: 38,051.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.13 : 100,390.27 = 25,364.13 : x
  2. Step 2: Convert to fraction form
    66,917.13/100,390.27 = 25,364.13/x
  3. Step 3: Cross multiply
    66,917.13x = 100,390.27 × 25,364.13
  4. Step 4: Simplify right side
    66,917.13x = 2,546,311,859.02
  5. Step 5: Solve for x
    x = 2,546,311,859.02/66,917.13
  6. Step 6: Final answer
    x = 38,051.72

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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.