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Finding the Fourth Proportional to 43,436.99, 65,113.87 and 13,835.64

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Solution

The fourth proportional to 43,436.99, 65,113.87 and 13,835.64 is: 20,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,436.99 : 65,113.87 = 13,835.64 : x
  2. Step 2: Convert to fraction form
    43,436.99/65,113.87 = 13,835.64/x
  3. Step 3: Cross multiply
    43,436.99x = 65,113.87 × 13,835.64
  4. Step 4: Simplify right side
    43,436.99x = 900,892,064.33
  5. Step 5: Solve for x
    x = 900,892,064.33/43,436.99
  6. Step 6: Final answer
    x = 20,740.20

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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.