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Finding the Fourth Proportional to 65,112.25, 89,855.45 and 35,304.25

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Solution

The fourth proportional to 65,112.25, 89,855.45 and 35,304.25 is: 48,720.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,112.25 : 89,855.45 = 35,304.25 : x
  2. Step 2: Convert to fraction form
    65,112.25/89,855.45 = 35,304.25/x
  3. Step 3: Cross multiply
    65,112.25x = 89,855.45 × 35,304.25
  4. Step 4: Simplify right side
    65,112.25x = 3,172,279,270.66
  5. Step 5: Solve for x
    x = 3,172,279,270.66/65,112.25
  6. Step 6: Final answer
    x = 48,720.16

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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.