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Finding the Fourth Proportional to 68,713.58, 102,862.88 and 62,142.86

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Solution

The fourth proportional to 68,713.58, 102,862.88 and 62,142.86 is: 93,026.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.58 : 102,862.88 = 62,142.86 : x
  2. Step 2: Convert to fraction form
    68,713.58/102,862.88 = 62,142.86/x
  3. Step 3: Cross multiply
    68,713.58x = 102,862.88 × 62,142.86
  4. Step 4: Simplify right side
    68,713.58x = 6,392,193,551.04
  5. Step 5: Solve for x
    x = 6,392,193,551.04/68,713.58
  6. Step 6: Final answer
    x = 93,026.64

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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.