Home / 56,904.64-78,520.80-31,753.60

Finding the Fourth Proportional to 56,904.64, 78,520.80 and 31,753.60

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Solution

The fourth proportional to 56,904.64, 78,520.80 and 31,753.60 is: 43,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,904.64 : 78,520.80 = 31,753.60 : x
  2. Step 2: Convert to fraction form
    56,904.64/78,520.80 = 31,753.60/x
  3. Step 3: Cross multiply
    56,904.64x = 78,520.80 × 31,753.60
  4. Step 4: Simplify right side
    56,904.64x = 2,493,318,074.88
  5. Step 5: Solve for x
    x = 2,493,318,074.88/56,904.64
  6. Step 6: Final answer
    x = 43,815.73

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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.