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Finding the Fourth Proportional to 67,128, 92,640.48 and 37,321.92

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Solution

The fourth proportional to 67,128, 92,640.48 and 37,321.92 is: 51,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,128 : 92,640.48 = 37,321.92 : x
  2. Step 2: Convert to fraction form
    67,128/92,640.48 = 37,321.92/x
  3. Step 3: Cross multiply
    67,128x = 92,640.48 × 37,321.92
  4. Step 4: Simplify right side
    67,128x = 3,457,520,583.32
  5. Step 5: Solve for x
    x = 3,457,520,583.32/67,128
  6. Step 6: Final answer
    x = 51,506.38

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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.