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Finding the Fourth Proportional to 65,661.12, 90,617.04 and 37,375.92

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Solution

The fourth proportional to 65,661.12, 90,617.04 and 37,375.92 is: 51,581.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,661.12 : 90,617.04 = 37,375.92 : x
  2. Step 2: Convert to fraction form
    65,661.12/90,617.04 = 37,375.92/x
  3. Step 3: Cross multiply
    65,661.12x = 90,617.04 × 37,375.92
  4. Step 4: Simplify right side
    65,661.12x = 3,386,895,237.68
  5. Step 5: Solve for x
    x = 3,386,895,237.68/65,661.12
  6. Step 6: Final answer
    x = 51,581.44

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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.