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Finding the Fourth Proportional to 61,243.20, 91,867.68 and 21,800.64

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Solution

The fourth proportional to 61,243.20, 91,867.68 and 21,800.64 is: 32,701.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,243.20 : 91,867.68 = 21,800.64 : x
  2. Step 2: Convert to fraction form
    61,243.20/91,867.68 = 21,800.64/x
  3. Step 3: Cross multiply
    61,243.20x = 91,867.68 × 21,800.64
  4. Step 4: Simplify right side
    61,243.20x = 2,002,774,219.32
  5. Step 5: Solve for x
    x = 2,002,774,219.32/61,243.20
  6. Step 6: Final answer
    x = 32,701.99

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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.