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Finding the Fourth Proportional to 43,418.76, 65,137.88 and 15,340.92

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Solution

The fourth proportional to 43,418.76, 65,137.88 and 15,340.92 is: 23,014.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,418.76 : 65,137.88 = 15,340.92 : x
  2. Step 2: Convert to fraction form
    43,418.76/65,137.88 = 15,340.92/x
  3. Step 3: Cross multiply
    43,418.76x = 65,137.88 × 15,340.92
  4. Step 4: Simplify right side
    43,418.76x = 999,275,006.05
  5. Step 5: Solve for x
    x = 999,275,006.05/43,418.76
  6. Step 6: Final answer
    x = 23,014.82

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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.