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Finding the Fourth Proportional to 66,930.75, 100,396.13 and 25,377.75

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Solution

The fourth proportional to 66,930.75, 100,396.13 and 25,377.75 is: 38,066.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930.75 : 100,396.13 = 25,377.75 : x
  2. Step 2: Convert to fraction form
    66,930.75/100,396.13 = 25,377.75/x
  3. Step 3: Cross multiply
    66,930.75x = 100,396.13 × 25,377.75
  4. Step 4: Simplify right side
    66,930.75x = 2,547,827,761.22
  5. Step 5: Solve for x
    x = 2,547,827,761.22/66,930.75
  6. Step 6: Final answer
    x = 38,066.63

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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.