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Finding the Fourth Proportional to 99,651.35, 149,463 and 28,580.08

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Solution

The fourth proportional to 99,651.35, 149,463 and 28,580.08 is: 42,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651.35 : 149,463 = 28,580.08 : x
  2. Step 2: Convert to fraction form
    99,651.35/149,463 = 28,580.08/x
  3. Step 3: Cross multiply
    99,651.35x = 149,463 × 28,580.08
  4. Step 4: Simplify right side
    99,651.35x = 4,271,664,497.04
  5. Step 5: Solve for x
    x = 4,271,664,497.04/99,651.35
  6. Step 6: Final answer
    x = 42,866.10

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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.