Home / 57,187.30-78,917.52-31,345.60

Finding the Fourth Proportional to 57,187.30, 78,917.52 and 31,345.60

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Solution

The fourth proportional to 57,187.30, 78,917.52 and 31,345.60 is: 43,256.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,187.30 : 78,917.52 = 31,345.60 : x
  2. Step 2: Convert to fraction form
    57,187.30/78,917.52 = 31,345.60/x
  3. Step 3: Cross multiply
    57,187.30x = 78,917.52 × 31,345.60
  4. Step 4: Simplify right side
    57,187.30x = 2,473,717,014.91
  5. Step 5: Solve for x
    x = 2,473,717,014.91/57,187.30
  6. Step 6: Final answer
    x = 43,256.41

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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.