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Finding the Fourth Proportional to 65,639.84, 90,581.82 and 37,344.92

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Solution

The fourth proportional to 65,639.84, 90,581.82 and 37,344.92 is: 51,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,639.84 : 90,581.82 = 37,344.92 : x
  2. Step 2: Convert to fraction form
    65,639.84/90,581.82 = 37,344.92/x
  3. Step 3: Cross multiply
    65,639.84x = 90,581.82 × 37,344.92
  4. Step 4: Simplify right side
    65,639.84x = 3,382,770,821.35
  5. Step 5: Solve for x
    x = 3,382,770,821.35/65,639.84
  6. Step 6: Final answer
    x = 51,535.33

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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.