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Finding the Fourth Proportional to 89,165.95, 133,700.63 and 39,187.54

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Solution

The fourth proportional to 89,165.95, 133,700.63 and 39,187.54 is: 58,760.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,165.95 : 133,700.63 = 39,187.54 : x
  2. Step 2: Convert to fraction form
    89,165.95/133,700.63 = 39,187.54/x
  3. Step 3: Cross multiply
    89,165.95x = 133,700.63 × 39,187.54
  4. Step 4: Simplify right side
    89,165.95x = 5,239,398,786.15
  5. Step 5: Solve for x
    x = 5,239,398,786.15/89,165.95
  6. Step 6: Final answer
    x = 58,760.08

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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.