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Finding the Fourth Proportional to 99,759.75, 149,667.75 and 40,637.85

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Solution

The fourth proportional to 99,759.75, 149,667.75 and 40,637.85 is: 60,968.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.75 : 149,667.75 = 40,637.85 : x
  2. Step 2: Convert to fraction form
    99,759.75/149,667.75 = 40,637.85/x
  3. Step 3: Cross multiply
    99,759.75x = 149,667.75 × 40,637.85
  4. Step 4: Simplify right side
    99,759.75x = 6,082,175,574.34
  5. Step 5: Solve for x
    x = 6,082,175,574.34/99,759.75
  6. Step 6: Final answer
    x = 60,968.23

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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.