Home / 56,789.28-78,372.63-31,295.58

Finding the Fourth Proportional to 56,789.28, 78,372.63 and 31,295.58

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Solution

The fourth proportional to 56,789.28, 78,372.63 and 31,295.58 is: 43,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,789.28 : 78,372.63 = 31,295.58 : x
  2. Step 2: Convert to fraction form
    56,789.28/78,372.63 = 31,295.58/x
  3. Step 3: Cross multiply
    56,789.28x = 78,372.63 × 31,295.58
  4. Step 4: Simplify right side
    56,789.28x = 2,452,716,618.08
  5. Step 5: Solve for x
    x = 2,452,716,618.08/56,789.28
  6. Step 6: Final answer
    x = 43,189.78

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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.