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Finding the Fourth Proportional to 68,990.04, 95,206.52 and 38,776.64

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Solution

The fourth proportional to 68,990.04, 95,206.52 and 38,776.64 is: 53,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.04 : 95,206.52 = 38,776.64 : x
  2. Step 2: Convert to fraction form
    68,990.04/95,206.52 = 38,776.64/x
  3. Step 3: Cross multiply
    68,990.04x = 95,206.52 × 38,776.64
  4. Step 4: Simplify right side
    68,990.04x = 3,691,788,572.60
  5. Step 5: Solve for x
    x = 3,691,788,572.60/68,990.04
  6. Step 6: Final answer
    x = 53,511.91

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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.