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Finding the Fourth Proportional to 68,636.32, 102,953.40 and 21,888.88

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Solution

The fourth proportional to 68,636.32, 102,953.40 and 21,888.88 is: 32,832.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,636.32 : 102,953.40 = 21,888.88 : x
  2. Step 2: Convert to fraction form
    68,636.32/102,953.40 = 21,888.88/x
  3. Step 3: Cross multiply
    68,636.32x = 102,953.40 × 21,888.88
  4. Step 4: Simplify right side
    68,636.32x = 2,253,534,618.19
  5. Step 5: Solve for x
    x = 2,253,534,618.19/68,636.32
  6. Step 6: Final answer
    x = 32,832.98

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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.