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Finding the Fourth Proportional to 89,157.35, 133,742.10 and 28,362.80

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Solution

The fourth proportional to 89,157.35, 133,742.10 and 28,362.80 is: 42,546.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,157.35 : 133,742.10 = 28,362.80 : x
  2. Step 2: Convert to fraction form
    89,157.35/133,742.10 = 28,362.80/x
  3. Step 3: Cross multiply
    89,157.35x = 133,742.10 × 28,362.80
  4. Step 4: Simplify right side
    89,157.35x = 3,793,300,433.88
  5. Step 5: Solve for x
    x = 3,793,300,433.88/89,157.35
  6. Step 6: Final answer
    x = 42,546.13

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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.