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Finding the Fourth Proportional to 89,490.33, 133,943.40 and 65,791.62

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Solution

The fourth proportional to 89,490.33, 133,943.40 and 65,791.62 is: 98,472.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,490.33 : 133,943.40 = 65,791.62 : x
  2. Step 2: Convert to fraction form
    89,490.33/133,943.40 = 65,791.62/x
  3. Step 3: Cross multiply
    89,490.33x = 133,943.40 × 65,791.62
  4. Step 4: Simplify right side
    89,490.33x = 8,812,353,274.31
  5. Step 5: Solve for x
    x = 8,812,353,274.31/89,490.33
  6. Step 6: Final answer
    x = 98,472.69

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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.