Home / 56,735.76-78,290.64-31,584.72

Finding the Fourth Proportional to 56,735.76, 78,290.64 and 31,584.72

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Solution

The fourth proportional to 56,735.76, 78,290.64 and 31,584.72 is: 43,584.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,735.76 : 78,290.64 = 31,584.72 : x
  2. Step 2: Convert to fraction form
    56,735.76/78,290.64 = 31,584.72/x
  3. Step 3: Cross multiply
    56,735.76x = 78,290.64 × 31,584.72
  4. Step 4: Simplify right side
    56,735.76x = 2,472,787,943.02
  5. Step 5: Solve for x
    x = 2,472,787,943.02/56,735.76
  6. Step 6: Final answer
    x = 43,584.29

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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.