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Finding the Fourth Proportional to 68,309, 94,283.70 and 38,518.28

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Solution

The fourth proportional to 68,309, 94,283.70 and 38,518.28 is: 53,164.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,309 : 94,283.70 = 38,518.28 : x
  2. Step 2: Convert to fraction form
    68,309/94,283.70 = 38,518.28/x
  3. Step 3: Cross multiply
    68,309x = 94,283.70 × 38,518.28
  4. Step 4: Simplify right side
    68,309x = 3,631,645,956.04
  5. Step 5: Solve for x
    x = 3,631,645,956.04/68,309
  6. Step 6: Final answer
    x = 53,164.97

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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.