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Finding the Fourth Proportional to 65,368.87, 90,201.60 and 36,682.60

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Solution

The fourth proportional to 65,368.87, 90,201.60 and 36,682.60 is: 50,617.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,368.87 : 90,201.60 = 36,682.60 : x
  2. Step 2: Convert to fraction form
    65,368.87/90,201.60 = 36,682.60/x
  3. Step 3: Cross multiply
    65,368.87x = 90,201.60 × 36,682.60
  4. Step 4: Simplify right side
    65,368.87x = 3,308,829,212.16
  5. Step 5: Solve for x
    x = 3,308,829,212.16/65,368.87
  6. Step 6: Final answer
    x = 50,617.81

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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.