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Finding the Fourth Proportional to 57,718.83, 79,653.23 and 31,877.30

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Solution

The fourth proportional to 57,718.83, 79,653.23 and 31,877.30 is: 43,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,718.83 : 79,653.23 = 31,877.30 : x
  2. Step 2: Convert to fraction form
    57,718.83/79,653.23 = 31,877.30/x
  3. Step 3: Cross multiply
    57,718.83x = 79,653.23 × 31,877.30
  4. Step 4: Simplify right side
    57,718.83x = 2,539,129,908.68
  5. Step 5: Solve for x
    x = 2,539,129,908.68/57,718.83
  6. Step 6: Final answer
    x = 43,991.36

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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.