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Finding the Fourth Proportional to 43,603.20, 65,404.80 and 34,855.20

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Solution

The fourth proportional to 43,603.20, 65,404.80 and 34,855.20 is: 52,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,603.20 : 65,404.80 = 34,855.20 : x
  2. Step 2: Convert to fraction form
    43,603.20/65,404.80 = 34,855.20/x
  3. Step 3: Cross multiply
    43,603.20x = 65,404.80 × 34,855.20
  4. Step 4: Simplify right side
    43,603.20x = 2,279,697,384.96
  5. Step 5: Solve for x
    x = 2,279,697,384.96/43,603.20
  6. Step 6: Final answer
    x = 52,282.80

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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.