Home / 56,981.31-78,633.77-31,489.39

Finding the Fourth Proportional to 56,981.31, 78,633.77 and 31,489.39

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Solution

The fourth proportional to 56,981.31, 78,633.77 and 31,489.39 is: 43,455.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,981.31 : 78,633.77 = 31,489.39 : x
  2. Step 2: Convert to fraction form
    56,981.31/78,633.77 = 31,489.39/x
  3. Step 3: Cross multiply
    56,981.31x = 78,633.77 × 31,489.39
  4. Step 4: Simplify right side
    56,981.31x = 2,476,129,450.70
  5. Step 5: Solve for x
    x = 2,476,129,450.70/56,981.31
  6. Step 6: Final answer
    x = 43,455.12

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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.