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Finding the Fourth Proportional to 68,424.77, 102,636.45 and 21,677.65

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Solution

The fourth proportional to 68,424.77, 102,636.45 and 21,677.65 is: 32,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,424.77 : 102,636.45 = 21,677.65 : x
  2. Step 2: Convert to fraction form
    68,424.77/102,636.45 = 21,677.65/x
  3. Step 3: Cross multiply
    68,424.77x = 102,636.45 × 21,677.65
  4. Step 4: Simplify right side
    68,424.77x = 2,224,916,783.75
  5. Step 5: Solve for x
    x = 2,224,916,783.75/68,424.77
  6. Step 6: Final answer
    x = 32,516.25

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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.