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Finding the Fourth Proportional to 43,904.20, 65,840.10 and 21,710.20

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Solution

The fourth proportional to 43,904.20, 65,840.10 and 21,710.20 is: 32,557.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,904.20 : 65,840.10 = 21,710.20 : x
  2. Step 2: Convert to fraction form
    43,904.20/65,840.10 = 21,710.20/x
  3. Step 3: Cross multiply
    43,904.20x = 65,840.10 × 21,710.20
  4. Step 4: Simplify right side
    43,904.20x = 1,429,401,739.02
  5. Step 5: Solve for x
    x = 1,429,401,739.02/43,904.20
  6. Step 6: Final answer
    x = 32,557.29

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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.