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Finding the Fourth Proportional to 66,720.93, 100,065.67 and 24,578.12

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Solution

The fourth proportional to 66,720.93, 100,065.67 and 24,578.12 is: 36,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,720.93 : 100,065.67 = 24,578.12 : x
  2. Step 2: Convert to fraction form
    66,720.93/100,065.67 = 24,578.12/x
  3. Step 3: Cross multiply
    66,720.93x = 100,065.67 × 24,578.12
  4. Step 4: Simplify right side
    66,720.93x = 2,459,426,045.14
  5. Step 5: Solve for x
    x = 2,459,426,045.14/66,720.93
  6. Step 6: Final answer
    x = 36,861.39

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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.