Home / 56,704.16-78,252.72-31,211.60

Finding the Fourth Proportional to 56,704.16, 78,252.72 and 31,211.60

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Solution

The fourth proportional to 56,704.16, 78,252.72 and 31,211.60 is: 43,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,704.16 : 78,252.72 = 31,211.60 : x
  2. Step 2: Convert to fraction form
    56,704.16/78,252.72 = 31,211.60/x
  3. Step 3: Cross multiply
    56,704.16x = 78,252.72 × 31,211.60
  4. Step 4: Simplify right side
    56,704.16x = 2,442,392,595.55
  5. Step 5: Solve for x
    x = 2,442,392,595.55/56,704.16
  6. Step 6: Final answer
    x = 43,072.55

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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.