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Finding the Fourth Proportional to 65,809.85, 90,817.29 and 35,595.20

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Solution

The fourth proportional to 65,809.85, 90,817.29 and 35,595.20 is: 49,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,809.85 : 90,817.29 = 35,595.20 : x
  2. Step 2: Convert to fraction form
    65,809.85/90,817.29 = 35,595.20/x
  3. Step 3: Cross multiply
    65,809.85x = 90,817.29 × 35,595.20
  4. Step 4: Simplify right side
    65,809.85x = 3,232,659,601.01
  5. Step 5: Solve for x
    x = 3,232,659,601.01/65,809.85
  6. Step 6: Final answer
    x = 49,121.21

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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.