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Finding the Fourth Proportional to 89,161.40, 133,722.90 and 39,241.40

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Solution

The fourth proportional to 89,161.40, 133,722.90 and 39,241.40 is: 58,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,161.40 : 133,722.90 = 39,241.40 : x
  2. Step 2: Convert to fraction form
    89,161.40/133,722.90 = 39,241.40/x
  3. Step 3: Cross multiply
    89,161.40x = 133,722.90 × 39,241.40
  4. Step 4: Simplify right side
    89,161.40x = 5,247,473,808.06
  5. Step 5: Solve for x
    x = 5,247,473,808.06/89,161.40
  6. Step 6: Final answer
    x = 58,853.65

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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.