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Finding the Fourth Proportional to 99,900.50, 149,924.70 and 47,310.11

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Solution

The fourth proportional to 99,900.50, 149,924.70 and 47,310.11 is: 71,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,900.50 : 149,924.70 = 47,310.11 : x
  2. Step 2: Convert to fraction form
    99,900.50/149,924.70 = 47,310.11/x
  3. Step 3: Cross multiply
    99,900.50x = 149,924.70 × 47,310.11
  4. Step 4: Simplify right side
    99,900.50x = 7,092,954,048.72
  5. Step 5: Solve for x
    x = 7,092,954,048.72/99,900.50
  6. Step 6: Final answer
    x = 71,000.19

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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.