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Finding the Fourth Proportional to 89,208.75, 133,864.97 and 39,960.75

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Solution

The fourth proportional to 89,208.75, 133,864.97 and 39,960.75 is: 59,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,208.75 : 133,864.97 = 39,960.75 : x
  2. Step 2: Convert to fraction form
    89,208.75/133,864.97 = 39,960.75/x
  3. Step 3: Cross multiply
    89,208.75x = 133,864.97 × 39,960.75
  4. Step 4: Simplify right side
    89,208.75x = 5,349,344,400.12
  5. Step 5: Solve for x
    x = 5,349,344,400.12/89,208.75
  6. Step 6: Final answer
    x = 59,964.35

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1.5x scale

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.