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Finding the Fourth Proportional to 43,740.88, 65,621.72 and 14,158.71

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Solution

The fourth proportional to 43,740.88, 65,621.72 and 14,158.71 is: 21,241.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,740.88 : 65,621.72 = 14,158.71 : x
  2. Step 2: Convert to fraction form
    43,740.88/65,621.72 = 14,158.71/x
  3. Step 3: Cross multiply
    43,740.88x = 65,621.72 × 14,158.71
  4. Step 4: Simplify right side
    43,740.88x = 929,118,938.58
  5. Step 5: Solve for x
    x = 929,118,938.58/43,740.88
  6. Step 6: Final answer
    x = 21,241.43

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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.