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Finding the Fourth Proportional to 68,290.54, 102,434.59 and 26,159.20

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Solution

The fourth proportional to 68,290.54, 102,434.59 and 26,159.20 is: 39,238.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,290.54 : 102,434.59 = 26,159.20 : x
  2. Step 2: Convert to fraction form
    68,290.54/102,434.59 = 26,159.20/x
  3. Step 3: Cross multiply
    68,290.54x = 102,434.59 × 26,159.20
  4. Step 4: Simplify right side
    68,290.54x = 2,679,606,926.73
  5. Step 5: Solve for x
    x = 2,679,606,926.73/68,290.54
  6. Step 6: Final answer
    x = 39,238.33

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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.