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Finding the Fourth Proportional to 69,001.71, 103,502.57 and 21,617.21

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Solution

The fourth proportional to 69,001.71, 103,502.57 and 21,617.21 is: 32,425.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,001.71 : 103,502.57 = 21,617.21 : x
  2. Step 2: Convert to fraction form
    69,001.71/103,502.57 = 21,617.21/x
  3. Step 3: Cross multiply
    69,001.71x = 103,502.57 × 21,617.21
  4. Step 4: Simplify right side
    69,001.71x = 2,237,436,165.63
  5. Step 5: Solve for x
    x = 2,237,436,165.63/69,001.71
  6. Step 6: Final answer
    x = 32,425.81

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1.5x scale

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.