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Finding the Fourth Proportional to 66,842.97, 92,234.51 and 39,975.67

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Solution

The fourth proportional to 66,842.97, 92,234.51 and 39,975.67 is: 55,161.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,842.97 : 92,234.51 = 39,975.67 : x
  2. Step 2: Convert to fraction form
    66,842.97/92,234.51 = 39,975.67/x
  3. Step 3: Cross multiply
    66,842.97x = 92,234.51 × 39,975.67
  4. Step 4: Simplify right side
    66,842.97x = 3,687,136,334.37
  5. Step 5: Solve for x
    x = 3,687,136,334.37/66,842.97
  6. Step 6: Final answer
    x = 55,161.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.