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Finding the Fourth Proportional to 71,677.70, 107,516.73 and 21,758.18

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Solution

The fourth proportional to 71,677.70, 107,516.73 and 21,758.18 is: 32,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,677.70 : 107,516.73 = 21,758.18 : x
  2. Step 2: Convert to fraction form
    71,677.70/107,516.73 = 21,758.18/x
  3. Step 3: Cross multiply
    71,677.70x = 107,516.73 × 21,758.18
  4. Step 4: Simplify right side
    71,677.70x = 2,339,368,364.35
  5. Step 5: Solve for x
    x = 2,339,368,364.35/71,677.70
  6. Step 6: Final answer
    x = 32,637.32

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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.