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Finding the Fourth Proportional to 43,407.68, 65,131.76 and 15,348.96

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Solution

The fourth proportional to 43,407.68, 65,131.76 and 15,348.96 is: 23,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,407.68 : 65,131.76 = 15,348.96 : x
  2. Step 2: Convert to fraction form
    43,407.68/65,131.76 = 15,348.96/x
  3. Step 3: Cross multiply
    43,407.68x = 65,131.76 × 15,348.96
  4. Step 4: Simplify right side
    43,407.68x = 999,704,778.97
  5. Step 5: Solve for x
    x = 999,704,778.97/43,407.68
  6. Step 6: Final answer
    x = 23,030.60

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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.