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Finding the Fourth Proportional to 43,697.88, 65,483.91 and 18,731.25

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Solution

The fourth proportional to 43,697.88, 65,483.91 and 18,731.25 is: 28,069.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,697.88 : 65,483.91 = 18,731.25 : x
  2. Step 2: Convert to fraction form
    43,697.88/65,483.91 = 18,731.25/x
  3. Step 3: Cross multiply
    43,697.88x = 65,483.91 × 18,731.25
  4. Step 4: Simplify right side
    43,697.88x = 1,226,595,489.19
  5. Step 5: Solve for x
    x = 1,226,595,489.19/43,697.88
  6. Step 6: Final answer
    x = 28,069.91

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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.