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Finding the Fourth Proportional to 99,593.70, 149,390.55 and 40,431.30

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Solution

The fourth proportional to 99,593.70, 149,390.55 and 40,431.30 is: 60,646.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,593.70 : 149,390.55 = 40,431.30 : x
  2. Step 2: Convert to fraction form
    99,593.70/149,390.55 = 40,431.30/x
  3. Step 3: Cross multiply
    99,593.70x = 149,390.55 × 40,431.30
  4. Step 4: Simplify right side
    99,593.70x = 6,040,054,144.22
  5. Step 5: Solve for x
    x = 6,040,054,144.22/99,593.70
  6. Step 6: Final answer
    x = 60,646.95

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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.