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Finding the Fourth Proportional to 66,825.84, 100,231.08 and 17,581.68

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Solution

The fourth proportional to 66,825.84, 100,231.08 and 17,581.68 is: 26,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,825.84 : 100,231.08 = 17,581.68 : x
  2. Step 2: Convert to fraction form
    66,825.84/100,231.08 = 17,581.68/x
  3. Step 3: Cross multiply
    66,825.84x = 100,231.08 × 17,581.68
  4. Step 4: Simplify right side
    66,825.84x = 1,762,230,774.61
  5. Step 5: Solve for x
    x = 1,762,230,774.61/66,825.84
  6. Step 6: Final answer
    x = 26,370.50

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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.