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Finding the Fourth Proportional to 65,006.70, 89,735.09 and 40,801.20

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Solution

The fourth proportional to 65,006.70, 89,735.09 and 40,801.20 is: 56,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,006.70 : 89,735.09 = 40,801.20 : x
  2. Step 2: Convert to fraction form
    65,006.70/89,735.09 = 40,801.20/x
  3. Step 3: Cross multiply
    65,006.70x = 89,735.09 × 40,801.20
  4. Step 4: Simplify right side
    65,006.70x = 3,661,299,150.10
  5. Step 5: Solve for x
    x = 3,661,299,150.10/65,006.70
  6. Step 6: Final answer
    x = 56,321.87

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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.