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Finding the Fourth Proportional to 69,001.64, 103,502.44 and 21,617.11

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Solution

The fourth proportional to 69,001.64, 103,502.44 and 21,617.11 is: 32,425.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,001.64 : 103,502.44 = 21,617.11 : x
  2. Step 2: Convert to fraction form
    69,001.64/103,502.44 = 21,617.11/x
  3. Step 3: Cross multiply
    69,001.64x = 103,502.44 × 21,617.11
  4. Step 4: Simplify right side
    69,001.64x = 2,237,423,787.15
  5. Step 5: Solve for x
    x = 2,237,423,787.15/69,001.64
  6. Step 6: Final answer
    x = 32,425.66

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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.