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Finding the Fourth Proportional to 65,981.70, 91,053.60 and 37,300.86

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Solution

The fourth proportional to 65,981.70, 91,053.60 and 37,300.86 is: 51,474.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,981.70 : 91,053.60 = 37,300.86 : x
  2. Step 2: Convert to fraction form
    65,981.70/91,053.60 = 37,300.86/x
  3. Step 3: Cross multiply
    65,981.70x = 91,053.60 × 37,300.86
  4. Step 4: Simplify right side
    65,981.70x = 3,396,377,586.10
  5. Step 5: Solve for x
    x = 3,396,377,586.10/65,981.70
  6. Step 6: Final answer
    x = 51,474.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.