Home / 56,618.91-78,132.20-31,467.87

Finding the Fourth Proportional to 56,618.91, 78,132.20 and 31,467.87

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Solution

The fourth proportional to 56,618.91, 78,132.20 and 31,467.87 is: 43,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,618.91 : 78,132.20 = 31,467.87 : x
  2. Step 2: Convert to fraction form
    56,618.91/78,132.20 = 31,467.87/x
  3. Step 3: Cross multiply
    56,618.91x = 78,132.20 × 31,467.87
  4. Step 4: Simplify right side
    56,618.91x = 2,458,653,755.07
  5. Step 5: Solve for x
    x = 2,458,653,755.07/56,618.91
  6. Step 6: Final answer
    x = 43,424.60

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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.