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Finding the Fourth Proportional to 43,695.13, 65,488.02 and 18,706.09

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Solution

The fourth proportional to 43,695.13, 65,488.02 and 18,706.09 is: 28,035.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,695.13 : 65,488.02 = 18,706.09 : x
  2. Step 2: Convert to fraction form
    43,695.13/65,488.02 = 18,706.09/x
  3. Step 3: Cross multiply
    43,695.13x = 65,488.02 × 18,706.09
  4. Step 4: Simplify right side
    43,695.13x = 1,225,024,796.04
  5. Step 5: Solve for x
    x = 1,225,024,796.04/43,695.13
  6. Step 6: Final answer
    x = 28,035.73

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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.