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Finding the Fourth Proportional to 89,290.92, 133,936.38 and 42,401.64

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Solution

The fourth proportional to 89,290.92, 133,936.38 and 42,401.64 is: 63,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,290.92 : 133,936.38 = 42,401.64 : x
  2. Step 2: Convert to fraction form
    89,290.92/133,936.38 = 42,401.64/x
  3. Step 3: Cross multiply
    89,290.92x = 133,936.38 × 42,401.64
  4. Step 4: Simplify right side
    89,290.92x = 5,679,122,167.66
  5. Step 5: Solve for x
    x = 5,679,122,167.66/89,290.92
  6. Step 6: Final answer
    x = 63,602.46

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Similar ratio
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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.