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Finding the Fourth Proportional to 91,702.38, 126,435.03 and 72,544.38

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Solution

The fourth proportional to 91,702.38, 126,435.03 and 72,544.38 is: 100,020.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,702.38 : 126,435.03 = 72,544.38 : x
  2. Step 2: Convert to fraction form
    91,702.38/126,435.03 = 72,544.38/x
  3. Step 3: Cross multiply
    91,702.38x = 126,435.03 × 72,544.38
  4. Step 4: Simplify right side
    91,702.38x = 9,172,150,861.63
  5. Step 5: Solve for x
    x = 9,172,150,861.63/91,702.38
  6. Step 6: Final answer
    x = 100,020.86

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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.