Home / 56,842.16-78,438.72-31,348.80

Finding the Fourth Proportional to 56,842.16, 78,438.72 and 31,348.80

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Solution

The fourth proportional to 56,842.16, 78,438.72 and 31,348.80 is: 43,259.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,842.16 : 78,438.72 = 31,348.80 : x
  2. Step 2: Convert to fraction form
    56,842.16/78,438.72 = 31,348.80/x
  3. Step 3: Cross multiply
    56,842.16x = 78,438.72 × 31,348.80
  4. Step 4: Simplify right side
    56,842.16x = 2,458,959,863.09
  5. Step 5: Solve for x
    x = 2,458,959,863.09/56,842.16
  6. Step 6: Final answer
    x = 43,259.44

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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.