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Finding the Fourth Proportional to 66,658.71, 92,012.19 and 38,375.67

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Solution

The fourth proportional to 66,658.71, 92,012.19 and 38,375.67 is: 52,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,658.71 : 92,012.19 = 38,375.67 : x
  2. Step 2: Convert to fraction form
    66,658.71/92,012.19 = 38,375.67/x
  3. Step 3: Cross multiply
    66,658.71x = 92,012.19 × 38,375.67
  4. Step 4: Simplify right side
    66,658.71x = 3,531,029,247.54
  5. Step 5: Solve for x
    x = 3,531,029,247.54/66,658.71
  6. Step 6: Final answer
    x = 52,971.76

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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.