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Finding the Fourth Proportional to 68,656.40, 94,744.20 and 38,848.40

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Solution

The fourth proportional to 68,656.40, 94,744.20 and 38,848.40 is: 53,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,656.40 : 94,744.20 = 38,848.40 : x
  2. Step 2: Convert to fraction form
    68,656.40/94,744.20 = 38,848.40/x
  3. Step 3: Cross multiply
    68,656.40x = 94,744.20 × 38,848.40
  4. Step 4: Simplify right side
    68,656.40x = 3,680,660,579.28
  5. Step 5: Solve for x
    x = 3,680,660,579.28/68,656.40
  6. Step 6: Final answer
    x = 53,609.87

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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.