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Finding the Fourth Proportional to 99,064.80, 148,694.40 and 49,201.20

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Solution

The fourth proportional to 99,064.80, 148,694.40 and 49,201.20 is: 73,850.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,064.80 : 148,694.40 = 49,201.20 : x
  2. Step 2: Convert to fraction form
    99,064.80/148,694.40 = 49,201.20/x
  3. Step 3: Cross multiply
    99,064.80x = 148,694.40 × 49,201.20
  4. Step 4: Simplify right side
    99,064.80x = 7,315,942,913.28
  5. Step 5: Solve for x
    x = 7,315,942,913.28/99,064.80
  6. Step 6: Final answer
    x = 73,850.08

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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.