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Finding the Fourth Proportional to 66,512.70, 99,801.45 and 50,712.30

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Solution

The fourth proportional to 66,512.70, 99,801.45 and 50,712.30 is: 76,093.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,512.70 : 99,801.45 = 50,712.30 : x
  2. Step 2: Convert to fraction form
    66,512.70/99,801.45 = 50,712.30/x
  3. Step 3: Cross multiply
    66,512.70x = 99,801.45 × 50,712.30
  4. Step 4: Simplify right side
    66,512.70x = 5,061,161,072.84
  5. Step 5: Solve for x
    x = 5,061,161,072.84/66,512.70
  6. Step 6: Final answer
    x = 76,093.15

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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.