Home / 99,463.55-149,140.79-39,431.21

Finding the Fourth Proportional to 99,463.55, 149,140.79 and 39,431.21

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Solution

The fourth proportional to 99,463.55, 149,140.79 and 39,431.21 is: 59,125.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,463.55 : 149,140.79 = 39,431.21 : x
  2. Step 2: Convert to fraction form
    99,463.55/149,140.79 = 39,431.21/x
  3. Step 3: Cross multiply
    99,463.55x = 149,140.79 × 39,431.21
  4. Step 4: Simplify right side
    99,463.55x = 5,880,800,867.20
  5. Step 5: Solve for x
    x = 5,880,800,867.20/99,463.55
  6. Step 6: Final answer
    x = 59,125.19

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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.