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Finding the Fourth Proportional to 68,855.30, 95,023.95 and 38,639.06

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Solution

The fourth proportional to 68,855.30, 95,023.95 and 38,639.06 is: 53,323.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,855.30 : 95,023.95 = 38,639.06 : x
  2. Step 2: Convert to fraction form
    68,855.30/95,023.95 = 38,639.06/x
  3. Step 3: Cross multiply
    68,855.30x = 95,023.95 × 38,639.06
  4. Step 4: Simplify right side
    68,855.30x = 3,671,636,198.15
  5. Step 5: Solve for x
    x = 3,671,636,198.15/68,855.30
  6. Step 6: Final answer
    x = 53,323.94

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1.5x scale

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.