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Finding the Fourth Proportional to 66,682.52, 92,031.54 and 38,387.96

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Solution

The fourth proportional to 66,682.52, 92,031.54 and 38,387.96 is: 52,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,682.52 : 92,031.54 = 38,387.96 : x
  2. Step 2: Convert to fraction form
    66,682.52/92,031.54 = 38,387.96/x
  3. Step 3: Cross multiply
    66,682.52x = 92,031.54 × 38,387.96
  4. Step 4: Simplify right side
    66,682.52x = 3,532,903,076.26
  5. Step 5: Solve for x
    x = 3,532,903,076.26/66,682.52
  6. Step 6: Final answer
    x = 52,980.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.