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Finding the Fourth Proportional to 99,880.70, 149,800.79 and 36,679.10

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Solution

The fourth proportional to 99,880.70, 149,800.79 and 36,679.10 is: 55,011.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,880.70 : 149,800.79 = 36,679.10 : x
  2. Step 2: Convert to fraction form
    99,880.70/149,800.79 = 36,679.10/x
  3. Step 3: Cross multiply
    99,880.70x = 149,800.79 × 36,679.10
  4. Step 4: Simplify right side
    99,880.70x = 5,494,557,499.18
  5. Step 5: Solve for x
    x = 5,494,557,499.18/99,880.70
  6. Step 6: Final answer
    x = 55,011.21

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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.