Home / 65,431.32-98,166.64-20,450.86

Finding the Fourth Proportional to 65,431.32, 98,166.64 and 20,450.86

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Solution

The fourth proportional to 65,431.32, 98,166.64 and 20,450.86 is: 30,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,431.32 : 98,166.64 = 20,450.86 : x
  2. Step 2: Convert to fraction form
    65,431.32/98,166.64 = 20,450.86/x
  3. Step 3: Cross multiply
    65,431.32x = 98,166.64 × 20,450.86
  4. Step 4: Simplify right side
    65,431.32x = 2,007,592,211.31
  5. Step 5: Solve for x
    x = 2,007,592,211.31/65,431.32
  6. Step 6: Final answer
    x = 30,682.43

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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.