Home / 56,589.78-78,096.36-31,439.28

Finding the Fourth Proportional to 56,589.78, 78,096.36 and 31,439.28

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Solution

The fourth proportional to 56,589.78, 78,096.36 and 31,439.28 is: 43,387.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,589.78 : 78,096.36 = 31,439.28 : x
  2. Step 2: Convert to fraction form
    56,589.78/78,096.36 = 31,439.28/x
  3. Step 3: Cross multiply
    56,589.78x = 78,096.36 × 31,439.28
  4. Step 4: Simplify right side
    56,589.78x = 2,455,293,329.02
  5. Step 5: Solve for x
    x = 2,455,293,329.02/56,589.78
  6. Step 6: Final answer
    x = 43,387.58

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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.