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Finding the Fourth Proportional to 64,125.40, 96,072.90 and 54,909.40

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Solution

The fourth proportional to 64,125.40, 96,072.90 and 54,909.40 is: 82,265.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,125.40 : 96,072.90 = 54,909.40 : x
  2. Step 2: Convert to fraction form
    64,125.40/96,072.90 = 54,909.40/x
  3. Step 3: Cross multiply
    64,125.40x = 96,072.90 × 54,909.40
  4. Step 4: Simplify right side
    64,125.40x = 5,275,305,295.26
  5. Step 5: Solve for x
    x = 5,275,305,295.26/64,125.40
  6. Step 6: Final answer
    x = 82,265.46

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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.