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Finding the Fourth Proportional to 68,525.70, 102,788.55 and 65,901.30

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Solution

The fourth proportional to 68,525.70, 102,788.55 and 65,901.30 is: 98,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,525.70 : 102,788.55 = 65,901.30 : x
  2. Step 2: Convert to fraction form
    68,525.70/102,788.55 = 65,901.30/x
  3. Step 3: Cross multiply
    68,525.70x = 102,788.55 × 65,901.30
  4. Step 4: Simplify right side
    68,525.70x = 6,773,899,070.12
  5. Step 5: Solve for x
    x = 6,773,899,070.12/68,525.70
  6. Step 6: Final answer
    x = 98,851.95

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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.