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Finding the Fourth Proportional to 66,425.67, 99,660.02 and 39,767.49

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Solution

The fourth proportional to 66,425.67, 99,660.02 and 39,767.49 is: 59,664.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,425.67 : 99,660.02 = 39,767.49 : x
  2. Step 2: Convert to fraction form
    66,425.67/99,660.02 = 39,767.49/x
  3. Step 3: Cross multiply
    66,425.67x = 99,660.02 × 39,767.49
  4. Step 4: Simplify right side
    66,425.67x = 3,963,228,848.75
  5. Step 5: Solve for x
    x = 3,963,228,848.75/66,425.67
  6. Step 6: Final answer
    x = 59,664.12

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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.