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Finding the Fourth Proportional to 89,294.45, 133,941.68 and 69,587.75

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Solution

The fourth proportional to 89,294.45, 133,941.68 and 69,587.75 is: 104,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,294.45 : 133,941.68 = 69,587.75 : x
  2. Step 2: Convert to fraction form
    89,294.45/133,941.68 = 69,587.75/x
  3. Step 3: Cross multiply
    89,294.45x = 133,941.68 × 69,587.75
  4. Step 4: Simplify right side
    89,294.45x = 9,320,699,794.48
  5. Step 5: Solve for x
    x = 9,320,699,794.48/89,294.45
  6. Step 6: Final answer
    x = 104,381.63

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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.