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Finding the Fourth Proportional to 64,121.40, 96,066.90 and 54,905.40

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Solution

The fourth proportional to 64,121.40, 96,066.90 and 54,905.40 is: 82,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,121.40 : 96,066.90 = 54,905.40 : x
  2. Step 2: Convert to fraction form
    64,121.40/96,066.90 = 54,905.40/x
  3. Step 3: Cross multiply
    64,121.40x = 96,066.90 × 54,905.40
  4. Step 4: Simplify right side
    64,121.40x = 5,274,591,571.26
  5. Step 5: Solve for x
    x = 5,274,591,571.26/64,121.40
  6. Step 6: Final answer
    x = 82,259.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.