Home / 56,689.75-78,231.86-31,539.25

Finding the Fourth Proportional to 56,689.75, 78,231.86 and 31,539.25

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Solution

The fourth proportional to 56,689.75, 78,231.86 and 31,539.25 is: 43,524.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,689.75 : 78,231.86 = 31,539.25 : x
  2. Step 2: Convert to fraction form
    56,689.75/78,231.86 = 31,539.25/x
  3. Step 3: Cross multiply
    56,689.75x = 78,231.86 × 31,539.25
  4. Step 4: Simplify right side
    56,689.75x = 2,467,374,190.51
  5. Step 5: Solve for x
    x = 2,467,374,190.51/56,689.75
  6. Step 6: Final answer
    x = 43,524.17

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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.