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Finding the Fourth Proportional to 43,999.43, 65,999.21 and 10,719.50

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Solution

The fourth proportional to 43,999.43, 65,999.21 and 10,719.50 is: 16,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,999.43 : 65,999.21 = 10,719.50 : x
  2. Step 2: Convert to fraction form
    43,999.43/65,999.21 = 10,719.50/x
  3. Step 3: Cross multiply
    43,999.43x = 65,999.21 × 10,719.50
  4. Step 4: Simplify right side
    43,999.43x = 707,478,148.00
  5. Step 5: Solve for x
    x = 707,478,148.00/43,999.43
  6. Step 6: Final answer
    x = 16,079.26

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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.