Home / 56,921.42-78,555.87-31,432.64

Finding the Fourth Proportional to 56,921.42, 78,555.87 and 31,432.64

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Solution

The fourth proportional to 56,921.42, 78,555.87 and 31,432.64 is: 43,379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,921.42 : 78,555.87 = 31,432.64 : x
  2. Step 2: Convert to fraction form
    56,921.42/78,555.87 = 31,432.64/x
  3. Step 3: Cross multiply
    56,921.42x = 78,555.87 × 31,432.64
  4. Step 4: Simplify right side
    56,921.42x = 2,469,218,381.60
  5. Step 5: Solve for x
    x = 2,469,218,381.60/56,921.42
  6. Step 6: Final answer
    x = 43,379.42

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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.