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Finding the Fourth Proportional to 65,805.68, 90,804.84 and 38,949.32

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Solution

The fourth proportional to 65,805.68, 90,804.84 and 38,949.32 is: 53,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.68 : 90,804.84 = 38,949.32 : x
  2. Step 2: Convert to fraction form
    65,805.68/90,804.84 = 38,949.32/x
  3. Step 3: Cross multiply
    65,805.68x = 90,804.84 × 38,949.32
  4. Step 4: Simplify right side
    65,805.68x = 3,536,786,770.71
  5. Step 5: Solve for x
    x = 3,536,786,770.71/65,805.68
  6. Step 6: Final answer
    x = 53,745.92

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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.