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Finding the Fourth Proportional to 43,991.80, 65,987.70 and 43,335.70

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Solution

The fourth proportional to 43,991.80, 65,987.70 and 43,335.70 is: 65,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,991.80 : 65,987.70 = 43,335.70 : x
  2. Step 2: Convert to fraction form
    43,991.80/65,987.70 = 43,335.70/x
  3. Step 3: Cross multiply
    43,991.80x = 65,987.70 × 43,335.70
  4. Step 4: Simplify right side
    43,991.80x = 2,859,623,170.89
  5. Step 5: Solve for x
    x = 2,859,623,170.89/43,991.80
  6. Step 6: Final answer
    x = 65,003.55

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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.