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Finding the Fourth Proportional to 65,745.60, 90,736.92 and 37,070.80

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Solution

The fourth proportional to 65,745.60, 90,736.92 and 37,070.80 is: 51,162.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.60 : 90,736.92 = 37,070.80 : x
  2. Step 2: Convert to fraction form
    65,745.60/90,736.92 = 37,070.80/x
  3. Step 3: Cross multiply
    65,745.60x = 90,736.92 × 37,070.80
  4. Step 4: Simplify right side
    65,745.60x = 3,363,690,213.94
  5. Step 5: Solve for x
    x = 3,363,690,213.94/65,745.60
  6. Step 6: Final answer
    x = 51,162.21

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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.