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Finding the Fourth Proportional to 65,518.94, 90,419.32 and 36,847.60

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Solution

The fourth proportional to 65,518.94, 90,419.32 and 36,847.60 is: 50,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,518.94 : 90,419.32 = 36,847.60 : x
  2. Step 2: Convert to fraction form
    65,518.94/90,419.32 = 36,847.60/x
  3. Step 3: Cross multiply
    65,518.94x = 90,419.32 × 36,847.60
  4. Step 4: Simplify right side
    65,518.94x = 3,331,734,935.63
  5. Step 5: Solve for x
    x = 3,331,734,935.63/65,518.94
  6. Step 6: Final answer
    x = 50,851.48

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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.