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Finding the Fourth Proportional to 99,795.40, 149,732.70 and 40,635.40

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Solution

The fourth proportional to 99,795.40, 149,732.70 and 40,635.40 is: 60,969.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,795.40 : 149,732.70 = 40,635.40 : x
  2. Step 2: Convert to fraction form
    99,795.40/149,732.70 = 40,635.40/x
  3. Step 3: Cross multiply
    99,795.40x = 149,732.70 × 40,635.40
  4. Step 4: Simplify right side
    99,795.40x = 6,084,448,157.58
  5. Step 5: Solve for x
    x = 6,084,448,157.58/99,795.40
  6. Step 6: Final answer
    x = 60,969.22

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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.