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Finding the Fourth Proportional to 43,660.92, 65,436.57 and 18,671.57

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Solution

The fourth proportional to 43,660.92, 65,436.57 and 18,671.57 is: 27,983.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,660.92 : 65,436.57 = 18,671.57 : x
  2. Step 2: Convert to fraction form
    43,660.92/65,436.57 = 18,671.57/x
  3. Step 3: Cross multiply
    43,660.92x = 65,436.57 × 18,671.57
  4. Step 4: Simplify right side
    43,660.92x = 1,221,803,497.31
  5. Step 5: Solve for x
    x = 1,221,803,497.31/43,660.92
  6. Step 6: Final answer
    x = 27,983.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.