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Finding the Fourth Proportional to 86,665.68, 129,797.64 and 63,234

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Solution

The fourth proportional to 86,665.68, 129,797.64 and 63,234 is: 94,704.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,665.68 : 129,797.64 = 63,234 : x
  2. Step 2: Convert to fraction form
    86,665.68/129,797.64 = 63,234/x
  3. Step 3: Cross multiply
    86,665.68x = 129,797.64 × 63,234
  4. Step 4: Simplify right side
    86,665.68x = 8,207,623,967.76
  5. Step 5: Solve for x
    x = 8,207,623,967.76/86,665.68
  6. Step 6: Final answer
    x = 94,704.43

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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.