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Finding the Fourth Proportional to 43,699.80, 65,549.72 and 10,867.80

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Solution

The fourth proportional to 43,699.80, 65,549.72 and 10,867.80 is: 16,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,699.80 : 65,549.72 = 10,867.80 : x
  2. Step 2: Convert to fraction form
    43,699.80/65,549.72 = 10,867.80/x
  3. Step 3: Cross multiply
    43,699.80x = 65,549.72 × 10,867.80
  4. Step 4: Simplify right side
    43,699.80x = 712,381,247.02
  5. Step 5: Solve for x
    x = 712,381,247.02/43,699.80
  6. Step 6: Final answer
    x = 16,301.70

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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.