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Finding the Fourth Proportional to 43,156.40, 64,745.40 and 34,305.20

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Solution

The fourth proportional to 43,156.40, 64,745.40 and 34,305.20 is: 51,466.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,156.40 : 64,745.40 = 34,305.20 : x
  2. Step 2: Convert to fraction form
    43,156.40/64,745.40 = 34,305.20/x
  3. Step 3: Cross multiply
    43,156.40x = 64,745.40 × 34,305.20
  4. Step 4: Simplify right side
    43,156.40x = 2,221,103,896.08
  5. Step 5: Solve for x
    x = 2,221,103,896.08/43,156.40
  6. Step 6: Final answer
    x = 51,466.38

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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.