Home / 56,791.31-78,372.55-31,298.60

Finding the Fourth Proportional to 56,791.31, 78,372.55 and 31,298.60

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Solution

The fourth proportional to 56,791.31, 78,372.55 and 31,298.60 is: 43,192.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,791.31 : 78,372.55 = 31,298.60 : x
  2. Step 2: Convert to fraction form
    56,791.31/78,372.55 = 31,298.60/x
  3. Step 3: Cross multiply
    56,791.31x = 78,372.55 × 31,298.60
  4. Step 4: Simplify right side
    56,791.31x = 2,452,950,545.07
  5. Step 5: Solve for x
    x = 2,452,950,545.07/56,791.31
  6. Step 6: Final answer
    x = 43,192.36

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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.