Home / 56,721.81-78,276.60-31,571.31

Finding the Fourth Proportional to 56,721.81, 78,276.60 and 31,571.31

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Solution

The fourth proportional to 56,721.81, 78,276.60 and 31,571.31 is: 43,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,721.81 : 78,276.60 = 31,571.31 : x
  2. Step 2: Convert to fraction form
    56,721.81/78,276.60 = 31,571.31/x
  3. Step 3: Cross multiply
    56,721.81x = 78,276.60 × 31,571.31
  4. Step 4: Simplify right side
    56,721.81x = 2,471,294,804.35
  5. Step 5: Solve for x
    x = 2,471,294,804.35/56,721.81
  6. Step 6: Final answer
    x = 43,568.69

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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.