Home / 56,922.80-78,551.39-31,428.61

Finding the Fourth Proportional to 56,922.80, 78,551.39 and 31,428.61

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Solution

The fourth proportional to 56,922.80, 78,551.39 and 31,428.61 is: 43,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,922.80 : 78,551.39 = 31,428.61 : x
  2. Step 2: Convert to fraction form
    56,922.80/78,551.39 = 31,428.61/x
  3. Step 3: Cross multiply
    56,922.80x = 78,551.39 × 31,428.61
  4. Step 4: Simplify right side
    56,922.80x = 2,468,760,883.46
  5. Step 5: Solve for x
    x = 2,468,760,883.46/56,922.80
  6. Step 6: Final answer
    x = 43,370.34

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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.