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Finding the Fourth Proportional to 65,905.48, 90,963.30 and 60,591.88

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Solution

The fourth proportional to 65,905.48, 90,963.30 and 60,591.88 is: 83,629.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,905.48 : 90,963.30 = 60,591.88 : x
  2. Step 2: Convert to fraction form
    65,905.48/90,963.30 = 60,591.88/x
  3. Step 3: Cross multiply
    65,905.48x = 90,963.30 × 60,591.88
  4. Step 4: Simplify right side
    65,905.48x = 5,511,637,358.00
  5. Step 5: Solve for x
    x = 5,511,637,358.00/65,905.48
  6. Step 6: Final answer
    x = 83,629.42

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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.