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Finding the Fourth Proportional to 75,233.40, 112,979.70 and 40,241.40

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Solution

The fourth proportional to 75,233.40, 112,979.70 and 40,241.40 is: 60,431.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,233.40 : 112,979.70 = 40,241.40 : x
  2. Step 2: Convert to fraction form
    75,233.40/112,979.70 = 40,241.40/x
  3. Step 3: Cross multiply
    75,233.40x = 112,979.70 × 40,241.40
  4. Step 4: Simplify right side
    75,233.40x = 4,546,461,299.58
  5. Step 5: Solve for x
    x = 4,546,461,299.58/75,233.40
  6. Step 6: Final answer
    x = 60,431.42

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1.5x scale

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.