Home / 56,288.64-77,679.36-31,140.48

Finding the Fourth Proportional to 56,288.64, 77,679.36 and 31,140.48

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Solution

The fourth proportional to 56,288.64, 77,679.36 and 31,140.48 is: 42,974.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,288.64 : 77,679.36 = 31,140.48 : x
  2. Step 2: Convert to fraction form
    56,288.64/77,679.36 = 31,140.48/x
  3. Step 3: Cross multiply
    56,288.64x = 77,679.36 × 31,140.48
  4. Step 4: Simplify right side
    56,288.64x = 2,418,972,556.49
  5. Step 5: Solve for x
    x = 2,418,972,556.49/56,288.64
  6. Step 6: Final answer
    x = 42,974.44

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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.