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Finding the Fourth Proportional to 66,851.93, 100,210.37 and 41,909.45

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Solution

The fourth proportional to 66,851.93, 100,210.37 and 41,909.45 is: 62,821.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,851.93 : 100,210.37 = 41,909.45 : x
  2. Step 2: Convert to fraction form
    66,851.93/100,210.37 = 41,909.45/x
  3. Step 3: Cross multiply
    66,851.93x = 100,210.37 × 41,909.45
  4. Step 4: Simplify right side
    66,851.93x = 4,199,760,780.40
  5. Step 5: Solve for x
    x = 4,199,760,780.40/66,851.93
  6. Step 6: Final answer
    x = 62,821.83

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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.