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Finding the Fourth Proportional to 89,187.85, 133,795.62 and 30,018.91

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Solution

The fourth proportional to 89,187.85, 133,795.62 and 30,018.91 is: 45,033.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,187.85 : 133,795.62 = 30,018.91 : x
  2. Step 2: Convert to fraction form
    89,187.85/133,795.62 = 30,018.91/x
  3. Step 3: Cross multiply
    89,187.85x = 133,795.62 × 30,018.91
  4. Step 4: Simplify right side
    89,187.85x = 4,016,398,675.17
  5. Step 5: Solve for x
    x = 4,016,398,675.17/89,187.85
  6. Step 6: Final answer
    x = 45,033.02

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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.