Home / 63,405.60-87,420.32-40,704.56

Finding the Fourth Proportional to 63,405.60, 87,420.32 and 40,704.56

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Solution

The fourth proportional to 63,405.60, 87,420.32 and 40,704.56 is: 56,121.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,405.60 : 87,420.32 = 40,704.56 : x
  2. Step 2: Convert to fraction form
    63,405.60/87,420.32 = 40,704.56/x
  3. Step 3: Cross multiply
    63,405.60x = 87,420.32 × 40,704.56
  4. Step 4: Simplify right side
    63,405.60x = 3,558,405,660.66
  5. Step 5: Solve for x
    x = 3,558,405,660.66/63,405.60
  6. Step 6: Final answer
    x = 56,121.32

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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.