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Finding the Fourth Proportional to 65,101.65, 89,840.99 and 38,245.29

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Solution

The fourth proportional to 65,101.65, 89,840.99 and 38,245.29 is: 52,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,101.65 : 89,840.99 = 38,245.29 : x
  2. Step 2: Convert to fraction form
    65,101.65/89,840.99 = 38,245.29/x
  3. Step 3: Cross multiply
    65,101.65x = 89,840.99 × 38,245.29
  4. Step 4: Simplify right side
    65,101.65x = 3,435,994,716.44
  5. Step 5: Solve for x
    x = 3,435,994,716.44/65,101.65
  6. Step 6: Final answer
    x = 52,778.92

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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.