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Finding the Fourth Proportional to 65,639.80, 98,286.90 and 48,014.20

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Solution

The fourth proportional to 65,639.80, 98,286.90 and 48,014.20 is: 71,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,639.80 : 98,286.90 = 48,014.20 : x
  2. Step 2: Convert to fraction form
    65,639.80/98,286.90 = 48,014.20/x
  3. Step 3: Cross multiply
    65,639.80x = 98,286.90 × 48,014.20
  4. Step 4: Simplify right side
    65,639.80x = 4,719,166,873.98
  5. Step 5: Solve for x
    x = 4,719,166,873.98/65,639.80
  6. Step 6: Final answer
    x = 71,894.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.