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Finding the Fourth Proportional to 43,478.87, 65,247.53 and 15,398.82

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Solution

The fourth proportional to 43,478.87, 65,247.53 and 15,398.82 is: 23,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,478.87 : 65,247.53 = 15,398.82 : x
  2. Step 2: Convert to fraction form
    43,478.87/65,247.53 = 15,398.82/x
  3. Step 3: Cross multiply
    43,478.87x = 65,247.53 × 15,398.82
  4. Step 4: Simplify right side
    43,478.87x = 1,004,734,892.92
  5. Step 5: Solve for x
    x = 1,004,734,892.92/43,478.87
  6. Step 6: Final answer
    x = 23,108.58

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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.