Home / 57,157.29-78,876.20-31,663.58

Finding the Fourth Proportional to 57,157.29, 78,876.20 and 31,663.58

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Solution

The fourth proportional to 57,157.29, 78,876.20 and 31,663.58 is: 43,695.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,157.29 : 78,876.20 = 31,663.58 : x
  2. Step 2: Convert to fraction form
    57,157.29/78,876.20 = 31,663.58/x
  3. Step 3: Cross multiply
    57,157.29x = 78,876.20 × 31,663.58
  4. Step 4: Simplify right side
    57,157.29x = 2,497,502,868.80
  5. Step 5: Solve for x
    x = 2,497,502,868.80/57,157.29
  6. Step 6: Final answer
    x = 43,695.26

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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.