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Finding the Fourth Proportional to 65,809.48, 90,817.10 and 37,135.22

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Solution

The fourth proportional to 65,809.48, 90,817.10 and 37,135.22 is: 51,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,809.48 : 90,817.10 = 37,135.22 : x
  2. Step 2: Convert to fraction form
    65,809.48/90,817.10 = 37,135.22/x
  3. Step 3: Cross multiply
    65,809.48x = 90,817.10 × 37,135.22
  4. Step 4: Simplify right side
    65,809.48x = 3,372,512,988.26
  5. Step 5: Solve for x
    x = 3,372,512,988.26/65,809.48
  6. Step 6: Final answer
    x = 51,246.61

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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.