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Finding the Fourth Proportional to 65,761.39, 90,728.94 and 37,077.46

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Solution

The fourth proportional to 65,761.39, 90,728.94 and 37,077.46 is: 51,154.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,761.39 : 90,728.94 = 37,077.46 : x
  2. Step 2: Convert to fraction form
    65,761.39/90,728.94 = 37,077.46/x
  3. Step 3: Cross multiply
    65,761.39x = 90,728.94 × 37,077.46
  4. Step 4: Simplify right side
    65,761.39x = 3,363,998,190.05
  5. Step 5: Solve for x
    x = 3,363,998,190.05/65,761.39
  6. Step 6: Final answer
    x = 51,154.61

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1.5x scale

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.