Home / 56,731.76-78,288.44-31,580.72

Finding the Fourth Proportional to 56,731.76, 78,288.44 and 31,580.72

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Solution

The fourth proportional to 56,731.76, 78,288.44 and 31,580.72 is: 43,580.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.76 : 78,288.44 = 31,580.72 : x
  2. Step 2: Convert to fraction form
    56,731.76/78,288.44 = 31,580.72/x
  3. Step 3: Cross multiply
    56,731.76x = 78,288.44 × 31,580.72
  4. Step 4: Simplify right side
    56,731.76x = 2,472,405,302.88
  5. Step 5: Solve for x
    x = 2,472,405,302.88/56,731.76
  6. Step 6: Final answer
    x = 43,580.62

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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.