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Finding the Fourth Proportional to 99,583.20, 149,371.20 and 40,417.20

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Solution

The fourth proportional to 99,583.20, 149,371.20 and 40,417.20 is: 60,624.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,583.20 : 149,371.20 = 40,417.20 : x
  2. Step 2: Convert to fraction form
    99,583.20/149,371.20 = 40,417.20/x
  3. Step 3: Cross multiply
    99,583.20x = 149,371.20 × 40,417.20
  4. Step 4: Simplify right side
    99,583.20x = 6,037,165,664.64
  5. Step 5: Solve for x
    x = 6,037,165,664.64/99,583.20
  6. Step 6: Final answer
    x = 60,624.34

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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.