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Finding the Fourth Proportional to 66,013.34, 98,968.97 and 21,612.38

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Solution

The fourth proportional to 66,013.34, 98,968.97 and 21,612.38 is: 32,401.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,013.34 : 98,968.97 = 21,612.38 : x
  2. Step 2: Convert to fraction form
    66,013.34/98,968.97 = 21,612.38/x
  3. Step 3: Cross multiply
    66,013.34x = 98,968.97 × 21,612.38
  4. Step 4: Simplify right side
    66,013.34x = 2,138,954,547.03
  5. Step 5: Solve for x
    x = 2,138,954,547.03/66,013.34
  6. Step 6: Final answer
    x = 32,401.86

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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.