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Finding the Fourth Proportional to 65,804.10, 90,809.66 and 35,589.42

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Solution

The fourth proportional to 65,804.10, 90,809.66 and 35,589.42 is: 49,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,804.10 : 90,809.66 = 35,589.42 : x
  2. Step 2: Convert to fraction form
    65,804.10/90,809.66 = 35,589.42/x
  3. Step 3: Cross multiply
    65,804.10x = 90,809.66 × 35,589.42
  4. Step 4: Simplify right side
    65,804.10x = 3,231,862,951.85
  5. Step 5: Solve for x
    x = 3,231,862,951.85/65,804.10
  6. Step 6: Final answer
    x = 49,113.40

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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.