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Finding the Fourth Proportional to 43,661.04, 65,436.76 and 18,671.69

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Solution

The fourth proportional to 43,661.04, 65,436.76 and 18,671.69 is: 27,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,661.04 : 65,436.76 = 18,671.69 : x
  2. Step 2: Convert to fraction form
    43,661.04/65,436.76 = 18,671.69/x
  3. Step 3: Cross multiply
    43,661.04x = 65,436.76 × 18,671.69
  4. Step 4: Simplify right side
    43,661.04x = 1,221,815,014.24
  5. Step 5: Solve for x
    x = 1,221,815,014.24/43,661.04
  6. Step 6: Final answer
    x = 27,984.10

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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.