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Finding the Fourth Proportional to 68,009.15, 102,031.02 and 39,952.94

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Solution

The fourth proportional to 68,009.15, 102,031.02 and 39,952.94 is: 59,939.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,009.15 : 102,031.02 = 39,952.94 : x
  2. Step 2: Convert to fraction form
    68,009.15/102,031.02 = 39,952.94/x
  3. Step 3: Cross multiply
    68,009.15x = 102,031.02 × 39,952.94
  4. Step 4: Simplify right side
    68,009.15x = 4,076,438,710.04
  5. Step 5: Solve for x
    x = 4,076,438,710.04/68,009.15
  6. Step 6: Final answer
    x = 59,939.56

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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.